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FIN 307 Principle of Finance Discussion
Financial decisions, return, risk, and the firm’s value are all related. The world of finance is intertwined ...
FIN 307 Principle of Finance Discussion
Financial decisions, return, risk, and the firm’s value are all related. The world of finance is intertwined in the daily decisions that are made by the organization. For this discussion, consider a key event that is being considered at your company. This could be the launch of a new product, opening another location, etc. In your response, provide specific examples how these areas are related to the decision that the organization must make when deciding whether to move forward with this project.
Central Ohio Technical College Data Driven Decision Making Paper
Please use excel not minitab Instructions (please read and follow the instructions):Please solve the problems using excel ...
Central Ohio Technical College Data Driven Decision Making Paper
Please use excel not minitab Instructions (please read and follow the instructions):Please solve the problems using excel as the tool. For each problem, (1) specify the business and statistical hypotheses, (2) include screen shots of the results from excel, stating your specific answers separately from the screen shots (3) draw appropriate conclusions to your statistical hypotheses based on the results, and, finally, (4) present the business conclusions in a short non-statistical summary.1.Your hospital is negotiating with medical insurance providers, who would like to reduce the amount they pay as reimbursement for hospital stays. For a particular procedure, they would like to reduce payment by $300 and have patients go home one day earlier. To see what effect this would have on hospital costs, a random sample of 50 patients who were recently admitted for this procedure was analyzed. Had they left one day earlier, the average hospital cost would have been $322.44 less, and the standard deviation was found to be $21.71. Construct a 95% confidence interval for the mean net savings for the hospital, per patient, for the larger population of recent patients.The Glen Valley Steel Company manufactures steel bars. If the production process is working properly, it turns out steel bars with lengths that are normally distributed with a mean of at least 2.8 feet, with a standard deviation of 0.20 foot (as determined by the engineering specifications on the production equipment involved). Longer steel bars can be used or altered, but shorter steel bars must be scrapped. You select a sample of 25 bars, and the mean length is 2.73 feet. Do you need to adjust the production equipment? (use a significance level of 0.05.(Source: LSKB-5)Meier and Frank is a chain of department stores located in the Northwest. The company has issued its own credit cards for a number of years. As a new employee in the finance department, imagine that you have been assigned to a major investigation of the firm’s credit policies designed to reduce bad debt losses. You are requested to investigate the relationship between marital status at the time the card is issued and the subsequent payment record of the individual.You randomly select 100 credit cards issued three years previously. Of the 70 individuals that were married at the time the cards were issued, 11 have defaulted on a payment. Of the 30 individuals who were single when the cards were issued, 7 have defaulted. Do these data present sufficient evidence to indicate that marital status affects credit-worthiness? Use Alpha = 0.05.(Source: Unknown – 326RL?)The National Restaurant Association is interested in determining if there is a relationship between the type of pizza pie which Americans prefer and the region of the country in which they live. The association randomly selects 285 Americans and records the category of pizza pie which best describes their preference and the region of the country in which they live. The results are as follows:Type of Pizza Region Pie Preferred North South East West Thin Crust 40 30 35 45 Thick Crust 17 15 21 22 Pan Pizza 15 15 15 15 -----------------------------------------------------------At α = .10, what can the Association conclude? (Source: Unknown)Fancy Fish, a fine dining upscale restaurant in Northridge, California and 2016 Open Table Diners’ Choice award winner, is enjoying its eighteenth season of providing delectable food, exceptional service, and beautiful outdoor dining experiences. “Saturday - Half-off Bottled Wine Night” has made Fancy Fish one of the San Fernando Valley’s favorite restaurants. Every Saturday night, guests can enjoy half-off every bottle of wine on the wine list while dining in the restaurant or on the terrace. The owner began offering “Saturday - Half-off Bottled Wine Night” in 2010 as an incentive for guests to dine at Fancy Fish when the economy was in a recession. Now that the economy is booming, the owner is considering whether the promotion should be continued, or even expanded. One concern is the effect that the promotion is having on the overall revenue generated from sales to the participants.A random sample of 28 checks was collected over the course of one month of Saturday nights. Fourteen checks were from customers participating in the half-off promotion, and the other 14 checks were from customers not participating. The total revenue from each check (less alcohol, tax, and tip) is presented below. Do these data present sufficient evidence that the checks of participants is significantly different from checks of non-participants? What is your recommendation to the owner regarding the status of the promotion?With Wine DiscountW/O Wine Discount354635443629362948292960366443472447134936535051224432366. A major distillery for alcoholic beverages is interested in gaining a large share of the market composed of people aged 18-23 (in those states where 18 is the legal drinking age). Beer and wine are the traditional favorites of this age group. However, Bill Schuessler, the firm’s marketing manager, and Carol Pringle, manager of research and development, feel that a new version of distilled apple cider will appeal to this younger market. While they are sure that the alcohol content should remain below 5 percent, they are not sure exactly what it should be. Therefore, five versions of the cider have been prepared and each version has been tasted by a random sample of 25 young consumers. Each consumer has evaluated the drink on a 100-point scale, with the higher scores representing a greater liking for the product. The results of the test appear below. What should Schuessler and Pringle conclude?Version1% 2% 3% 4% 5%16 40 81 89 5318 62 81 95 2072 11 35 10 9857 49 16 70 6730 40 83 94 9216 63 35 06 0896 77 20 20 5939 93 64 20 4931 62 76 38 0378 91 19 47 3203 93 33 30 4774 42 33 28 7209 06 09 90 9542 23 12 42 2516 15 08 02 0421 45 40 74 2021 58 57 80 5056 61 78 95 9745 65 66 99 2491 34 84 98 4991 22 21 20 3550 07 38 14 2165 39 05 22 5827 50 96 13 4437 16 94 85 17(Source: Unknown)7. Morning House is a mail-order firm which carries a wide range of rather expensive art objects for homes and offices. It operates by advertising a particular item either in selected magazines or in a direct-mail program. Suppose the sales response varies widely by item and the firm’s management has been unable to predict in advance which items will sell well and which will not. Consequently the firm frequently experiences either stock-outs or excessive inventories.For many of the products Morning House sells, it is possible to order a limited amount for inventory and to place a subsequent order for delivery within two weeks. Thus, if the firm could make a early prediction of the ultimate sales of a product, its inventory problems would be greatly reduced. Since it takes approximately six weeks to receive 90% of the response to a given campaign, an accurate prediction of total sales made as late as the end of the first week of receiving orders would be useful.The first week’s sales and total sales of the last 12 campaigns of the firm are shown below. Can the first week’s sales be used to predict total sales? First week’s TotalCampaign Sales Sales 1 32 1672 20 913 114 5604 66 3355 18 706 125 6507 83 4018 65 3209 94 47010 5 1511 39 21012 50 265 -------------------------------------------- (Source: Unknown)Questions?
Rational Exponents, Radicals, Complex Numbers, algebra homework help
1. Write as a single power of 2. Carefully show each step of your work.2. Police departments find it very useful to be ...
Rational Exponents, Radicals, Complex Numbers, algebra homework help
1. Write as a single power of 2. Carefully show each step of your work.2. Police departments find it very useful to be able to approximate driving speeds in skidding accidents. If the road surface is wet concrete the function is S(x) = is used, where S(x) is the speed of the car in miles per hour and x is the distance skidded in feet.a. Fill out the table for each of the distances shown below. Round to the nearest whole number:b. Find the distance the car will skid if the speed of the car is 60 miles per hour.Round to two decimal places.3. Complex numbers are used by engineers and physicists to measure electrical circuits. To measure voltage, they use the formula E = I • Z, where E is voltage in volts, I is the current in amps, and Z is impedance, or resistance, in ohms.a. Find the voltage for an electrical circuit if the current is 3 - 4i amps and the impedance is 2 + i ohms. Simplify your answer completely. b. Find the Impedance for an electrical circuit if the voltage is 18 - 24i and the current is 6 - 3i amps. Simplify your answer completely.(please show all work)
Ohio University Module 7 Sample T Summary Hypothesis Test Worksheet
InstructionsIf the question requires computation, do the calculations and then give or select the correct values using the ...
Ohio University Module 7 Sample T Summary Hypothesis Test Worksheet
InstructionsIf the question requires computation, do the calculations and then give or select the correct values using the following rule:Keep at least 4 decimal places at intermediate steps of a calculation, and round your final answer to 2 decimal places, unless otherwise noted. For example: 16.6667 would become 16.67 after rounding(In the course notes for Module 7, probabilities such .678934 are instead rounded to four decimal places, so the correct way to report the aforementioned probability is .6789)Multiple AttemptsForce CompletionQuestion 1The following 5 questions (Q1 to Q5) are based on the following example:A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6. The appropriate statistical procedure for this example would be az-testt-testQuestion 2A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6. Is this a one-tailed or a two-tailed test?one-tailedtwo-tailedQuestion 3A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6. The most appropriate null hypothesis (in words) would beThere is a statistical difference in the amount of empathy expressed when comparing individuals who were bullied to the general population.There is no statistical difference in the amount of empathy expressed when comparing individuals who were bullied to the general population.Being bullied does significantly increase empathy when compared to the population of individuals in the general population who have not been bullied.Being bullied does not significantly increase empathy when compared to the population of individuals in the general population who have not been bullied.Question 4A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6. The most appropriate null hypothesis (in symbols) would beμempathy = 39.5μempathy = 30.6μempathy > 39.5μempathy > 30.6Question 5A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6.Test at the .05 level of significance.Set up the criteria for making a decision. That is, find the critical value using analpha = .05. (Make sure you are sign specific: + ; - ; or ± ) (Use your tables)-1.645±1.645±2.7562.064±2.064Question 6A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 116 scores obtained from individuals who were bullied yielded a mean of 39.5 and a standard deviation of 6.6. (Use these numbers only for this question!) What are the degrees of freedom? (numeric value only) Question 7A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 59.39. Random sampling of 51 scores obtained from individuals who were bullied yielded a mean of 54.72 and a standard deviation of 8.69. (Use these numbers only for this question!) What is the z-value or t-value you obtained (your test statistic)? (numeric value only, including negative sign if required)Question 8A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6.Test at the .05 level of significance.Suppose that the value of your calculated (obtained) test statistic is 6.74. What is your decision?reject the null hypothesisfail to reject the null hypothesisreject the alternative hypothesisQuestion 9A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6.Test at the .05 level of significance.The best conclusion for this example (based on your answer to Q8) would beBeing bullied does not significantly increase the amount of empathy expressed by individuals who were bullied when compared to the general population.Being bullied does not significantly decrease the amount of empathy expressed by individuals who were bullied when compared to the general population.There is no statistical difference in the amount of empathy expressed by individuals who were bullied when compared to the general population.There is a statistical difference in the amount of empathy expressed by individuals who were bullied when compared to the general population.Question 10A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6.Test at the .05 level of significance.Based on your evaluation of the null in Q8 and your conclusion is Q9, as a researcher you would be more concerned with aType I statistical errorType II statistical errorQuestion 11A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 61.23. Random sampling of 76 scores obtained from individuals who were bullied yielded a mean of 44.07 and a standard deviation of 22.87. (Use these numbers only for this question!) Suppose you want to calculate the 99% confidence interval.The mean you will use for this calculation is:Question 12A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6.Suppose you want to calculate the 99% confidence interval.What is the new critical value you will use for this calculation?±1.645±2.064±2.756±2.7976.74Question 13A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 65.49. Random sampling of 25 scores obtained from individuals who were bullied yielded a mean of 61 and a standard deviation of 20.11. (Use these numbers only for this question!) Calculate the 99% confidence interval. Steps: As you know, two values will be required to complete the following equation: _________ ≤ µ ≤ __________ For this question, what is the value that is below or less than µ?Question 14A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 57.14. Random sampling of 25 scores obtained from individuals who were bullied yielded a mean of 69.38 and a standard deviation of 8.91. (Use these numbers only for this question!) Calculate the 99% confidence interval. Steps: As you know, two values will be required to complete the following equation: _________ ≤ µ ≤ __________ For this question, what is the value that is above or greater than µ?Question 15If α = 0.14, and β = 0.05, complete the following questions by inserting the appropriate probability of each. (Response must be in decimal form) (Use these values for this question only) The statistical decision is to reject the null, and H0 is really true (i.e., a Type I error)Question 16If α = 0.06, and β = 0.09, complete the following questions by inserting the appropriate probability of each. (Response must be in decimal form) (Use these values for this question only) The statistical decision is to fail to reject null, and H0 is really true (i.e., a correct decision)Question 17If α = 0.15, and β = 0.16, complete the following questions by inserting the appropriate probability of each. (Response must be in decimal form) (Use these values for this question only) The statistical decision is to reject the null, and H0 is really false (i.e., Power)Question 18If α = 0.07, and β = 0.14, complete the following questions by inserting the appropriate probability of each. (Response must be in decimal form) (Use these values for this question only) The statistical decision is to fail to reject the null, and H0 is really false (i.e., a Type II error)Question 19A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure?The appropriate statistical procedure for this example would be a:t-testz-testchi-square goodness of fitchi-square test for independenceQuestion 20A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? Is this a one-tailed or a two-tailed test?one-tailedtwo-tailedQuestion 21A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? The most appropriate alternative hypothesis (in words) would be:There is no significant difference in systolic blood pressure when comparing people who take Atenolol to the general population of people who do not take Atenolol.There is a significant increase in systolic blood pressure when comparing people who take Atenolol to the general population of people who do not take Atenolol.People taking Atenolol will not experience a significantly lower systolic blood pressure when compared to the general population of people who do not take Atenolol.People taking Atenolol will experience a significantly lower systolic blood pressure when compared to the general population of people who do not take Atenolol.Question 22A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? The most appropriate alternative hypothesis (in symbols) would be:µBloodPressure = 165µBloodPressure = 147µBloodPressure < 165µBloodPressure< 147Question 23A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? Set alpha equal to .01. Set up the criteria for making a decision. That is, find the critical value using an alpha = .01. (Make sure you are sign specific: + ; - ; or +/-) (Use your tables)+/- 2.457- 2.462- 2.750+/- 2.756Question 24A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The 114 individuals who take Atenolol have an average systolic blood pressure of 147, with a sample standard deviation of 11.89. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? (Use these numbers only for this question!) What is the numeric value of your standard error? Question 25A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 162 (µ = 162). The 167 individuals who take Atenolol have an average systolic blood pressure of 121, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? (Use these numbers only for this question!) What is the z-value or t-value you obtained (your test statistic)? (numeric value only, including negative sign if required) Question 26A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? Set alpha equal to .01. Suppose that the value of your calculated (obtained) test statistic is -16.51. What is your decision?Reject the null hypothesisFail to reject the null hypothesisQuestion 27A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? Set alpha equal to .01. The best conclusion for this example (based on your answer to Q26) would be:There is no significant difference in systolic blood pressure when comparing people who take Atenolol to the general population of people who do not take Atenolol.There is a significant difference in systolic blood pressure when comparing people who take Atenolol to the general population of people who do not take Atenolol.People taking Atenolol did not experience a significantly lower systolic blood pressure when compared to the general population of people who do not take Atenolol.People taking Atenolol experienced a significantly higher systolic blood pressure when compared to the general population of people who do not take Atenolol.Question 28A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? Set alpha equal to .01. Based on whether you rejected or failed to reject the null hypothesis (Q26), and your conclusion in Q27, as a researcher, you would be more concerned with a:Type I statistical errorType II statistical errorQuestion 29A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The 30 individuals who take Atenolol have an average systolic blood pressure of 179, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? (Use these data for this question only!) Calculate the 95% confidence interval The mean you will use for this calculation is: Question 30A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure?Calculate the 95% confidence intervalWhat is the new critical value you will use for this calculation?+/- 1.699+/- 2.045+/- 2.457+/- 2.462- 2.045Question 31A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 150 (µ = 150). The 30 individuals who take Atenolol have an average systolic blood pressure of 167, with a sample standard deviation of 14. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? (Use these numbers only for this question!) Calculate the 95% confidence interval As you know, two values will be required to complete the following equation: _________ ≤ µ ≤ __________ For this question, what is the value that is below or less than µ? Question 32A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 156 (µ = 156). The 30 individuals who take Atenolol have an average systolic blood pressure of 159, with a sample standard deviation of 23. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? (Use these numbers only for this question!) Calculate the 95% confidence interval As you know, two values will be required to complete the following equation: _________ ≤ µ ≤ __________ For this question, what is the value that is above or greater than µ? A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 156 (µ = 156). The 30 individuals who take Atenolol have an average systolic blood pressure of 159, with a sample standard deviation of 23. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? (Use these numbers only for this question!) Calculate the 95% confidence interval As you know, two values will be required to complete the following equation: _________ ≤ µ ≤ __________ For this question, what is the value that is above or greater than µ? Question 33The average time scheduled for a doctor’s visit is 17 minutes with a standard deviation of 14 minutes. A researcher uses a sampling distribution made up of samples of size 92. (Use these numbers for this question only!) According to the Central Limit Theorem, what is the standard error of the mean?Question 34The average time scheduled for a doctor’s visit is 9 minutes with a standard deviation of 8 minutes. A researcher uses a sampling distribution made up of samples of size 152. (Use these numbers for this question only!) According to the Central Limit Theorem, what is the mean of the sampling distribution of means?Question 35Which of the following is most likely to increase the calculated value of a t-test?Increase the number of subjectsDecrease the number of subjectsRepeat with a convenience sampleRepeat with the same sampleRepeat with a stratified random sampleQuestion 36As you increase the true distance between the null and alternative hypotheses, the likelihood of rejecting the null hypothesisIncreasesDecreasesRemains the sameQuestion 37Keeping everything else the same, if you were to change your alpha level from .01 to .05, the likelihood of rejecting the null hypothesisIncreasesDecreasesRemains the sameQuestion 38In a research setting, it is more common to use t-tests than z-tests becauseTypically the population mean is unknown.Typically the population standard deviation is unknown.They are more accurate since sample size is taken into account when determining critical values.Typically the sample mean is unknown."t" comes before "z" in the alphabetQuestion 39What is the basic question that underlies hypothesis testing?Is the sample representative of the population?Could the relationship observed in the sample have occurred by chance?What is the standard score?Should we reject the null hypothesis?
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20200420 Questions Ferry
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20200420 Questions Ferry
Tourist price sensitivity and the elasticity of demand: The case of BC ferries 1. Critically assess the method the author uses to calculate the price ...
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FIN 307 Principle of Finance Discussion
Financial decisions, return, risk, and the firm’s value are all related. The world of finance is intertwined ...
FIN 307 Principle of Finance Discussion
Financial decisions, return, risk, and the firm’s value are all related. The world of finance is intertwined in the daily decisions that are made by the organization. For this discussion, consider a key event that is being considered at your company. This could be the launch of a new product, opening another location, etc. In your response, provide specific examples how these areas are related to the decision that the organization must make when deciding whether to move forward with this project.
Central Ohio Technical College Data Driven Decision Making Paper
Please use excel not minitab Instructions (please read and follow the instructions):Please solve the problems using excel ...
Central Ohio Technical College Data Driven Decision Making Paper
Please use excel not minitab Instructions (please read and follow the instructions):Please solve the problems using excel as the tool. For each problem, (1) specify the business and statistical hypotheses, (2) include screen shots of the results from excel, stating your specific answers separately from the screen shots (3) draw appropriate conclusions to your statistical hypotheses based on the results, and, finally, (4) present the business conclusions in a short non-statistical summary.1.Your hospital is negotiating with medical insurance providers, who would like to reduce the amount they pay as reimbursement for hospital stays. For a particular procedure, they would like to reduce payment by $300 and have patients go home one day earlier. To see what effect this would have on hospital costs, a random sample of 50 patients who were recently admitted for this procedure was analyzed. Had they left one day earlier, the average hospital cost would have been $322.44 less, and the standard deviation was found to be $21.71. Construct a 95% confidence interval for the mean net savings for the hospital, per patient, for the larger population of recent patients.The Glen Valley Steel Company manufactures steel bars. If the production process is working properly, it turns out steel bars with lengths that are normally distributed with a mean of at least 2.8 feet, with a standard deviation of 0.20 foot (as determined by the engineering specifications on the production equipment involved). Longer steel bars can be used or altered, but shorter steel bars must be scrapped. You select a sample of 25 bars, and the mean length is 2.73 feet. Do you need to adjust the production equipment? (use a significance level of 0.05.(Source: LSKB-5)Meier and Frank is a chain of department stores located in the Northwest. The company has issued its own credit cards for a number of years. As a new employee in the finance department, imagine that you have been assigned to a major investigation of the firm’s credit policies designed to reduce bad debt losses. You are requested to investigate the relationship between marital status at the time the card is issued and the subsequent payment record of the individual.You randomly select 100 credit cards issued three years previously. Of the 70 individuals that were married at the time the cards were issued, 11 have defaulted on a payment. Of the 30 individuals who were single when the cards were issued, 7 have defaulted. Do these data present sufficient evidence to indicate that marital status affects credit-worthiness? Use Alpha = 0.05.(Source: Unknown – 326RL?)The National Restaurant Association is interested in determining if there is a relationship between the type of pizza pie which Americans prefer and the region of the country in which they live. The association randomly selects 285 Americans and records the category of pizza pie which best describes their preference and the region of the country in which they live. The results are as follows:Type of Pizza Region Pie Preferred North South East West Thin Crust 40 30 35 45 Thick Crust 17 15 21 22 Pan Pizza 15 15 15 15 -----------------------------------------------------------At α = .10, what can the Association conclude? (Source: Unknown)Fancy Fish, a fine dining upscale restaurant in Northridge, California and 2016 Open Table Diners’ Choice award winner, is enjoying its eighteenth season of providing delectable food, exceptional service, and beautiful outdoor dining experiences. “Saturday - Half-off Bottled Wine Night” has made Fancy Fish one of the San Fernando Valley’s favorite restaurants. Every Saturday night, guests can enjoy half-off every bottle of wine on the wine list while dining in the restaurant or on the terrace. The owner began offering “Saturday - Half-off Bottled Wine Night” in 2010 as an incentive for guests to dine at Fancy Fish when the economy was in a recession. Now that the economy is booming, the owner is considering whether the promotion should be continued, or even expanded. One concern is the effect that the promotion is having on the overall revenue generated from sales to the participants.A random sample of 28 checks was collected over the course of one month of Saturday nights. Fourteen checks were from customers participating in the half-off promotion, and the other 14 checks were from customers not participating. The total revenue from each check (less alcohol, tax, and tip) is presented below. Do these data present sufficient evidence that the checks of participants is significantly different from checks of non-participants? What is your recommendation to the owner regarding the status of the promotion?With Wine DiscountW/O Wine Discount354635443629362948292960366443472447134936535051224432366. A major distillery for alcoholic beverages is interested in gaining a large share of the market composed of people aged 18-23 (in those states where 18 is the legal drinking age). Beer and wine are the traditional favorites of this age group. However, Bill Schuessler, the firm’s marketing manager, and Carol Pringle, manager of research and development, feel that a new version of distilled apple cider will appeal to this younger market. While they are sure that the alcohol content should remain below 5 percent, they are not sure exactly what it should be. Therefore, five versions of the cider have been prepared and each version has been tasted by a random sample of 25 young consumers. Each consumer has evaluated the drink on a 100-point scale, with the higher scores representing a greater liking for the product. The results of the test appear below. What should Schuessler and Pringle conclude?Version1% 2% 3% 4% 5%16 40 81 89 5318 62 81 95 2072 11 35 10 9857 49 16 70 6730 40 83 94 9216 63 35 06 0896 77 20 20 5939 93 64 20 4931 62 76 38 0378 91 19 47 3203 93 33 30 4774 42 33 28 7209 06 09 90 9542 23 12 42 2516 15 08 02 0421 45 40 74 2021 58 57 80 5056 61 78 95 9745 65 66 99 2491 34 84 98 4991 22 21 20 3550 07 38 14 2165 39 05 22 5827 50 96 13 4437 16 94 85 17(Source: Unknown)7. Morning House is a mail-order firm which carries a wide range of rather expensive art objects for homes and offices. It operates by advertising a particular item either in selected magazines or in a direct-mail program. Suppose the sales response varies widely by item and the firm’s management has been unable to predict in advance which items will sell well and which will not. Consequently the firm frequently experiences either stock-outs or excessive inventories.For many of the products Morning House sells, it is possible to order a limited amount for inventory and to place a subsequent order for delivery within two weeks. Thus, if the firm could make a early prediction of the ultimate sales of a product, its inventory problems would be greatly reduced. Since it takes approximately six weeks to receive 90% of the response to a given campaign, an accurate prediction of total sales made as late as the end of the first week of receiving orders would be useful.The first week’s sales and total sales of the last 12 campaigns of the firm are shown below. Can the first week’s sales be used to predict total sales? First week’s TotalCampaign Sales Sales 1 32 1672 20 913 114 5604 66 3355 18 706 125 6507 83 4018 65 3209 94 47010 5 1511 39 21012 50 265 -------------------------------------------- (Source: Unknown)Questions?
Rational Exponents, Radicals, Complex Numbers, algebra homework help
1. Write as a single power of 2. Carefully show each step of your work.2. Police departments find it very useful to be ...
Rational Exponents, Radicals, Complex Numbers, algebra homework help
1. Write as a single power of 2. Carefully show each step of your work.2. Police departments find it very useful to be able to approximate driving speeds in skidding accidents. If the road surface is wet concrete the function is S(x) = is used, where S(x) is the speed of the car in miles per hour and x is the distance skidded in feet.a. Fill out the table for each of the distances shown below. Round to the nearest whole number:b. Find the distance the car will skid if the speed of the car is 60 miles per hour.Round to two decimal places.3. Complex numbers are used by engineers and physicists to measure electrical circuits. To measure voltage, they use the formula E = I • Z, where E is voltage in volts, I is the current in amps, and Z is impedance, or resistance, in ohms.a. Find the voltage for an electrical circuit if the current is 3 - 4i amps and the impedance is 2 + i ohms. Simplify your answer completely. b. Find the Impedance for an electrical circuit if the voltage is 18 - 24i and the current is 6 - 3i amps. Simplify your answer completely.(please show all work)
Ohio University Module 7 Sample T Summary Hypothesis Test Worksheet
InstructionsIf the question requires computation, do the calculations and then give or select the correct values using the ...
Ohio University Module 7 Sample T Summary Hypothesis Test Worksheet
InstructionsIf the question requires computation, do the calculations and then give or select the correct values using the following rule:Keep at least 4 decimal places at intermediate steps of a calculation, and round your final answer to 2 decimal places, unless otherwise noted. For example: 16.6667 would become 16.67 after rounding(In the course notes for Module 7, probabilities such .678934 are instead rounded to four decimal places, so the correct way to report the aforementioned probability is .6789)Multiple AttemptsForce CompletionQuestion 1The following 5 questions (Q1 to Q5) are based on the following example:A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6. The appropriate statistical procedure for this example would be az-testt-testQuestion 2A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6. Is this a one-tailed or a two-tailed test?one-tailedtwo-tailedQuestion 3A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6. The most appropriate null hypothesis (in words) would beThere is a statistical difference in the amount of empathy expressed when comparing individuals who were bullied to the general population.There is no statistical difference in the amount of empathy expressed when comparing individuals who were bullied to the general population.Being bullied does significantly increase empathy when compared to the population of individuals in the general population who have not been bullied.Being bullied does not significantly increase empathy when compared to the population of individuals in the general population who have not been bullied.Question 4A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6. The most appropriate null hypothesis (in symbols) would beμempathy = 39.5μempathy = 30.6μempathy > 39.5μempathy > 30.6Question 5A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6.Test at the .05 level of significance.Set up the criteria for making a decision. That is, find the critical value using analpha = .05. (Make sure you are sign specific: + ; - ; or ± ) (Use your tables)-1.645±1.645±2.7562.064±2.064Question 6A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 116 scores obtained from individuals who were bullied yielded a mean of 39.5 and a standard deviation of 6.6. (Use these numbers only for this question!) What are the degrees of freedom? (numeric value only) Question 7A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 59.39. Random sampling of 51 scores obtained from individuals who were bullied yielded a mean of 54.72 and a standard deviation of 8.69. (Use these numbers only for this question!) What is the z-value or t-value you obtained (your test statistic)? (numeric value only, including negative sign if required)Question 8A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6.Test at the .05 level of significance.Suppose that the value of your calculated (obtained) test statistic is 6.74. What is your decision?reject the null hypothesisfail to reject the null hypothesisreject the alternative hypothesisQuestion 9A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6.Test at the .05 level of significance.The best conclusion for this example (based on your answer to Q8) would beBeing bullied does not significantly increase the amount of empathy expressed by individuals who were bullied when compared to the general population.Being bullied does not significantly decrease the amount of empathy expressed by individuals who were bullied when compared to the general population.There is no statistical difference in the amount of empathy expressed by individuals who were bullied when compared to the general population.There is a statistical difference in the amount of empathy expressed by individuals who were bullied when compared to the general population.Question 10A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6.Test at the .05 level of significance.Based on your evaluation of the null in Q8 and your conclusion is Q9, as a researcher you would be more concerned with aType I statistical errorType II statistical errorQuestion 11A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 61.23. Random sampling of 76 scores obtained from individuals who were bullied yielded a mean of 44.07 and a standard deviation of 22.87. (Use these numbers only for this question!) Suppose you want to calculate the 99% confidence interval.The mean you will use for this calculation is:Question 12A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 30.6. Random sampling of 25 scores obtained from individuals who were bullied yielded a sample mean of 39.5 and a sample standard deviation of 6.6.Suppose you want to calculate the 99% confidence interval.What is the new critical value you will use for this calculation?±1.645±2.064±2.756±2.7976.74Question 13A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 65.49. Random sampling of 25 scores obtained from individuals who were bullied yielded a mean of 61 and a standard deviation of 20.11. (Use these numbers only for this question!) Calculate the 99% confidence interval. Steps: As you know, two values will be required to complete the following equation: _________ ≤ µ ≤ __________ For this question, what is the value that is below or less than µ?Question 14A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 57.14. Random sampling of 25 scores obtained from individuals who were bullied yielded a mean of 69.38 and a standard deviation of 8.91. (Use these numbers only for this question!) Calculate the 99% confidence interval. Steps: As you know, two values will be required to complete the following equation: _________ ≤ µ ≤ __________ For this question, what is the value that is above or greater than µ?Question 15If α = 0.14, and β = 0.05, complete the following questions by inserting the appropriate probability of each. (Response must be in decimal form) (Use these values for this question only) The statistical decision is to reject the null, and H0 is really true (i.e., a Type I error)Question 16If α = 0.06, and β = 0.09, complete the following questions by inserting the appropriate probability of each. (Response must be in decimal form) (Use these values for this question only) The statistical decision is to fail to reject null, and H0 is really true (i.e., a correct decision)Question 17If α = 0.15, and β = 0.16, complete the following questions by inserting the appropriate probability of each. (Response must be in decimal form) (Use these values for this question only) The statistical decision is to reject the null, and H0 is really false (i.e., Power)Question 18If α = 0.07, and β = 0.14, complete the following questions by inserting the appropriate probability of each. (Response must be in decimal form) (Use these values for this question only) The statistical decision is to fail to reject the null, and H0 is really false (i.e., a Type II error)Question 19A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure?The appropriate statistical procedure for this example would be a:t-testz-testchi-square goodness of fitchi-square test for independenceQuestion 20A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? Is this a one-tailed or a two-tailed test?one-tailedtwo-tailedQuestion 21A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? The most appropriate alternative hypothesis (in words) would be:There is no significant difference in systolic blood pressure when comparing people who take Atenolol to the general population of people who do not take Atenolol.There is a significant increase in systolic blood pressure when comparing people who take Atenolol to the general population of people who do not take Atenolol.People taking Atenolol will not experience a significantly lower systolic blood pressure when compared to the general population of people who do not take Atenolol.People taking Atenolol will experience a significantly lower systolic blood pressure when compared to the general population of people who do not take Atenolol.Question 22A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? The most appropriate alternative hypothesis (in symbols) would be:µBloodPressure = 165µBloodPressure = 147µBloodPressure < 165µBloodPressure< 147Question 23A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? Set alpha equal to .01. Set up the criteria for making a decision. That is, find the critical value using an alpha = .01. (Make sure you are sign specific: + ; - ; or +/-) (Use your tables)+/- 2.457- 2.462- 2.750+/- 2.756Question 24A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The 114 individuals who take Atenolol have an average systolic blood pressure of 147, with a sample standard deviation of 11.89. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? (Use these numbers only for this question!) What is the numeric value of your standard error? Question 25A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 162 (µ = 162). The 167 individuals who take Atenolol have an average systolic blood pressure of 121, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? (Use these numbers only for this question!) What is the z-value or t-value you obtained (your test statistic)? (numeric value only, including negative sign if required) Question 26A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? Set alpha equal to .01. Suppose that the value of your calculated (obtained) test statistic is -16.51. What is your decision?Reject the null hypothesisFail to reject the null hypothesisQuestion 27A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? Set alpha equal to .01. The best conclusion for this example (based on your answer to Q26) would be:There is no significant difference in systolic blood pressure when comparing people who take Atenolol to the general population of people who do not take Atenolol.There is a significant difference in systolic blood pressure when comparing people who take Atenolol to the general population of people who do not take Atenolol.People taking Atenolol did not experience a significantly lower systolic blood pressure when compared to the general population of people who do not take Atenolol.People taking Atenolol experienced a significantly higher systolic blood pressure when compared to the general population of people who do not take Atenolol.Question 28A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? Set alpha equal to .01. Based on whether you rejected or failed to reject the null hypothesis (Q26), and your conclusion in Q27, as a researcher, you would be more concerned with a:Type I statistical errorType II statistical errorQuestion 29A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The 30 individuals who take Atenolol have an average systolic blood pressure of 179, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? (Use these data for this question only!) Calculate the 95% confidence interval The mean you will use for this calculation is: Question 30A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 (µ = 165). The sample of 30 individuals who take Atenolol have an average (mean) systolic blood pressure of 147, with a sample standard deviation of 6. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure?Calculate the 95% confidence intervalWhat is the new critical value you will use for this calculation?+/- 1.699+/- 2.045+/- 2.457+/- 2.462- 2.045Question 31A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 150 (µ = 150). The 30 individuals who take Atenolol have an average systolic blood pressure of 167, with a sample standard deviation of 14. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? (Use these numbers only for this question!) Calculate the 95% confidence interval As you know, two values will be required to complete the following equation: _________ ≤ µ ≤ __________ For this question, what is the value that is below or less than µ? Question 32A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 156 (µ = 156). The 30 individuals who take Atenolol have an average systolic blood pressure of 159, with a sample standard deviation of 23. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? (Use these numbers only for this question!) Calculate the 95% confidence interval As you know, two values will be required to complete the following equation: _________ ≤ µ ≤ __________ For this question, what is the value that is above or greater than µ? A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 156 (µ = 156). The 30 individuals who take Atenolol have an average systolic blood pressure of 159, with a sample standard deviation of 23. On the basis of these data, can the researcher conclude that the Atenolol significantly lowers systolic blood pressure? (Use these numbers only for this question!) Calculate the 95% confidence interval As you know, two values will be required to complete the following equation: _________ ≤ µ ≤ __________ For this question, what is the value that is above or greater than µ? Question 33The average time scheduled for a doctor’s visit is 17 minutes with a standard deviation of 14 minutes. A researcher uses a sampling distribution made up of samples of size 92. (Use these numbers for this question only!) According to the Central Limit Theorem, what is the standard error of the mean?Question 34The average time scheduled for a doctor’s visit is 9 minutes with a standard deviation of 8 minutes. A researcher uses a sampling distribution made up of samples of size 152. (Use these numbers for this question only!) According to the Central Limit Theorem, what is the mean of the sampling distribution of means?Question 35Which of the following is most likely to increase the calculated value of a t-test?Increase the number of subjectsDecrease the number of subjectsRepeat with a convenience sampleRepeat with the same sampleRepeat with a stratified random sampleQuestion 36As you increase the true distance between the null and alternative hypotheses, the likelihood of rejecting the null hypothesisIncreasesDecreasesRemains the sameQuestion 37Keeping everything else the same, if you were to change your alpha level from .01 to .05, the likelihood of rejecting the null hypothesisIncreasesDecreasesRemains the sameQuestion 38In a research setting, it is more common to use t-tests than z-tests becauseTypically the population mean is unknown.Typically the population standard deviation is unknown.They are more accurate since sample size is taken into account when determining critical values.Typically the sample mean is unknown."t" comes before "z" in the alphabetQuestion 39What is the basic question that underlies hypothesis testing?Is the sample representative of the population?Could the relationship observed in the sample have occurred by chance?What is the standard score?Should we reject the null hypothesis?
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20200420 Questions Ferry
Tourist price sensitivity and the elasticity of demand: The case of BC ferries 1. Critically assess the method the author ...
20200420 Questions Ferry
Tourist price sensitivity and the elasticity of demand: The case of BC ferries 1. Critically assess the method the author uses to calculate the price ...
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