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99 /(1/4) = 99*4 =396
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Confidence Intervals Discussion
The B&K Real Estate Company sells homes and is currently serving the Southeast region. It has recently expanded to cover t ...
Confidence Intervals Discussion
The B&K Real Estate Company sells homes and is currently serving the Southeast region. It has recently expanded to cover the Northeast states. The B&K realtors are excited to now cover the entire East Coast and are working to prepare their southern agents to expand their reach to the Northeast.B&K has hired your company to analyze the Northeast home listing prices in order to give information to their agents about the mean listing price at 95% confidence. Your company offers three analysis packages: one based on a sample size of 100 listings, one based on 1,000 listings, and another based on a sample size of 4,000 listings. Because there is an additional cost for data collection, your company charges more for the package with 4,000 listings than for the package with 100 listings.Bronze Package - Sample size of 100 listings:95% confidence interval for the mean of the Northeast house listing price has a margin of error of $24,500Cost for service to B&K: $2,000Silver Package - Sample size of 1,000 listings:95% confidence interval for the mean of the Northeast house listing price has a margin of error of $7,750Cost for service to B&K: $10,000Gold Package - Sample size of 4,000 listings:95% confidence interval for the mean of the Northeast house listing price has a margin of error of $3,900Cost for service to B&K: $25,000The B&K management team does not understand the tradeoff between confidence level, sample size, and margin of error. B&K would like you to come back with your recommendation of the sample size that would provide the sales agents with the best understanding of northeast home prices at the lowest cost for service to B&K.In other words, which option is preferable?Spending more on data collection and having a smaller margin of errorSpending less on data collection and having a larger margin of errorChoosing an option somewhere in the middleFor your initial post:Formulate a recommendation and write a confidence statement in the context of this scenario. For the purposes of writing your confidence statement, assume the sample mean house listing price is $310,000 for all packages. “I am [#] % confident the true mean . . . [in context].”Explain the factors that went into your recommendation, including a discussion of the margin of errorFor your response posts to your peers, choose two different confidence intervals for your responses. Do you think the agents would prefer a different confidence interval than their management? What advantages and disadvantages would there be in having different confidence intervals for the agents? Explain your thought process and reasoning in your response.
Probability, Sampling Distribution, and Confidence, statistics homework help
Part 1Using the SPSS software, open the Afrobarometer dataset or the High School Longitudinal Study dataset (whichever you ...
Probability, Sampling Distribution, and Confidence, statistics homework help
Part 1Using the SPSS software, open the Afrobarometer dataset or the High School Longitudinal Study dataset (whichever you choose) found in this week’s Learning Resources.From the dataset you chose, choose one categorical and one continuous variable and perform the appropriate visual display for each variable.Once you visually display each variable, copy and paste your output into your Word document.For this Part 1 Assignment:Write a 2- to 3-paragraph analysis of your results and include a copy and paste of the appropriate visual display of the data into your document.Use appropriate APA format. Refer to the APA manual for appropriate citation.Part 2open the Afrobarometer dataset or the High School Longitudinal Study dataset from your Part 1 of your Assignment in Week 2.Choose the same two variables you chose from your Part 1 Assignment and perform the appropriate descriptive analysis of the data.Once you perform your descriptive analysis, review Chapter 11 of the Wagner text to understand how to copy and paste your output into your Word document.For this Part 2 Assignment:Write a 2- to 3-paragraph analysis of your descriptive analysis results and include a copy and paste your output from your analysis into your final document. Use appropriate APA format, citations and referencing. Refer to the APA manual for appropriate citation.Part 3open the Afrobarometer dataset or the High School Longitudinal Study dataset (whichever you chose) from Week 2.Choose an appropriate variable from Parts 1 and 2 of this Assignment and calculate a confidence interval in SPSS.Once you perform your confidence interval, review Chapter 5 and 11 of the Wagner text to understand how to copy and paste your output into your Word document.For this Part 3 Assignment:Write a 2- to 3-paragraph analysis of your results and include a copy and paste of the appropriate visual display of the data into your document.Use appropriate APA format. Refer to the APA manual for appropriate citation.
In the function shown in the chart below, between what values of x would you find the zeros of the function?
In the function shown in the chart below, between what values of&nb ...
In the function shown in the chart below, between what values of x would you find the zeros of the function?
In the function shown in the chart below, between what values of x would you find the zeros of the function?xf(x)-373-28-1-70-81-728373A. -1 and 0, 0 and 1B. -2 and -1, 1 and 2C. -7 and 8, -8 and -7D. 1 and -1
Statistics problems
Word document with questions is also attached, and answers must be put into the attached answer sheet. 1.True or False. Ju ...
Statistics problems
Word document with questions is also attached, and answers must be put into the attached answer sheet. 1.True or False. Justify for full credit.(a) If the variance of a data set is zero, then all the observations in this data set are zero. (b) If P(A) = 0.4 , P(B) = 0.5, and A and B are disjoint, then P(A AND B) = 0.9.(c)Assume X follows a continuous distribution which is symmetric about 0.If , then . (d)A 95% confidence interval is wider than a 90% confidence interval of the same parameter. (e)In a right-tailed test, the value of the test statistic is 1.5. If we know the test statistic follows a Student’s t-distribution with P(T < 1.5) = 0.96, then we fail to reject the null hypothesis at 0.05 level of significance .Refer to the following frequency distribution for Questions 2, 3, 4, and 5. Show all work. Just the answer, without supporting work, will receive no credit. The frequency distribution below shows the distribution for checkout time (in minutes) in UMUC MiniMart between 3:00 and 4:00 PM on a Friday afternoon. Checkout Time (in minutes) Frequency Relative Frequency 1.0 - 1.9 3 2.0 - 2.9 12 3.0 - 3.9 0.20 4.0 - 4.9 3 5.0 -5.9 Total 25 2.Complete the frequency table with frequency and relative frequency. Express the relative frequency to two decimal places. 3.What percentage of the checkout times was at least 3 minutes?4.In what class interval must the median lie?Explain your answer.5.Does this distribution have positive skew or negative skew? Why?Refer to the following information for Questions 6 and 7.Show all work. Just the answer, without supporting work, will receive no credit. Consider selecting one card at a time from a 52-card deck.(Note: There are 4 aces in a deck of cards) 6.If the card selection is with replacement, what is the probability that the first card is an ace and the second card is also an ace?(Express the answer in simplest fraction form) 7.If the card selection is without replacement, what is the probability that the first card is an ace and the second card is also an ace?(Express the answer in simplest fraction form) Refer to the following situation for Questions 8, 9, and 10. The five-number summary below shows the grade distribution of two STAT 200 quizzes for a sample of 500 students. Minimum Q1 Median Q3 Maximum Quiz 1 15 30 55 85 100 Quiz 2 20 35 50 90 100 For each question, give your answer as one of the following:(a) Quiz 1; (b) Quiz 2; (c) Both quizzes have the same value requested; (d) It is impossible to tell using only the given information. Then explain your answer in each case.8.Which quiz has less interquartile range in grade distribution?9.Which quiz has the greater percentage of students with grades 90 and over?10.Which quiz has a greater percentage of students with grades less than 60?Refer to the following information for Questions 11, 12, and 13. Show all work. Just the answer, without supporting work, will receive no credit. There are 1000 students in a high school.Among the 1000 students, 800 students have a laptop, and 300 students have a tablet.250 students have both devices.11.What is the probability that a randomly selected student has neither device?12.What is the probability that a randomly selected student has a laptop, given that he/she has a tablet?13.Let event A be the selected student having a laptop, and event B be the selected student having a tablet. Are A and B independent events?Why or why not?14.A combination lock uses three distinctive numbers between 0 and 39 inclusive.How many different ways can a sequence of three numbers be selected? (Show work)15.Let random variable x represent the number of heads when a fair coin is tossed three times.Show all work. Just the answer, without supporting work, will receive no credit. (a)Construct a table describing the probability distribution. (b)( Determine the mean and standard deviation of x. (Round the answer to two decimal places) 16.Mimi just started her tennis class three weeks ago. On average, she is able to return 20% of her opponent’s serves.Assume her opponent serves 10 times.(a)Let X be the number of returns that Mimi gets.As we know, the distribution of X is a binomial probability distribution. What is the number of trials (n), probability of successes (p) and probability of failures (q), respectively? (b)Find the probability that that she returns at least 1 of the 10 serves from her opponent. (Show work) Refer to the following information for Questions 17, 18, and 19. Show all work. Just the answer, without supporting work, will receive no credit. The lengths of mature jalapeño fruits are normally distributed with a mean of 3 inches and a standard deviation of 1 inch.17.What is the probability that a randomly selected mature jalapeño fruit is between 1.5 and 4 inches long?18.Find the 90th percentile of the jalapeño fruit length distribution.19. If a random sample of 100 mature jalapeño fruits is selected, what is the standard deviation of the sample mean? 20.A random sample of 100 light bulbs has a mean lifetime of 3000 hours. Assume that the population standard deviation of the lifetime is 500 hours. Construct a 95% confidence interval estimate of the mean lifetime. Show all work. Just the answer, without supporting work, will receive no credit. 21.Consider the hypothesis test given byH p0 : 0.5 H p1 : 0.5In a random sample of 625 subjects, the sample proportion is found to be pˆ 0.55. (a)Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit. (b)Determine the P-value for this test.Show all work; writing the correct P-value, without supporting work, will receive no credit.(c)Is there sufficient evidence to justify the rejection of H0 at the 0.01 level? Explain. 22.Consumption of large amounts of alcohol is known to increase reaction time. To investigate the effects of small amounts of alcohol, reaction time was recorded for five individuals before and after the consumption of 2 ounces of alcohol.Do the data below suggest that consumption of 2 ounces of alcohol increases mean reaction time? Reaction Time (seconds) Subject Before After 1 6 7 2 8 8 3 4 6 4 7 9 5 9 8 Assume we want to use a 0.05 significance level to test the claim. (a) Identify the null hypothesis and the alternative hypothesis.(b)Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit. (c)Determine the P-value. Show all work; writing the correct P-value, without supporting work, will receive no credit. (d) Is there sufficient evidence to support the claim that consumption of 2 ounces of alcohol increases mean reaction time? Justify your conclusion. 23.The UMUC MiniMart sells five different types of coffee mugs.The manager reports that the five types are equally popular.Suppose that a sample of 500 purchases yields observed counts 120, 90, 110, 100, and 80 for types 1, 2, 3, 4, and 5, respectively. Type 1 2 3 4 5 Number of Mugs 120 90 110 100 80 Assume we want to use a 0.05 significance level to test the claim that the five types are equally popular. (a)Identify the null hypothesis and the alternative hypothesis.(b)Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit. (c)Determine the P-value for the test. Show all work; writing the correct P-value, without supporting work, will receive no credit.(d)Is there sufficient evidence to support the manager’s claim that the four types are equally popular? Justify your answer.24.A random sample of 4 professional athletes produced the following data where x is the number of endorsements the player has and y is the amount of money made (in millions of dollars). x 0 1 3 5 y 1 2 5 8 (a)Find an equation of the least squares regression line.Show all work; writing the correct equation, without supporting work, will receive no credit.(b)Based on the equation from part (a), what is the predicted value of y if x = 2?Show all work and justify your answer.25. A STAT 200 instructor is interested in whether there is any variation in the final exam grades between her two classesData collected from the two classes are as follows: Her null hypothesis and alternative hypothesis are: (a)Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit. (b)Determine the P-value for this test.Show all work; writing the correct P-value, without supporting work, will receive no credit.(c)Is there sufficient evidence to justify the rejection of H0 at the significance level of 0.05? Explain.
LU Statistics Visual Representation of Data Discussion
Visual Representation of Data
The purpose of this assignment is to use pivot tables and pivot charts to aggregate data and ...
LU Statistics Visual Representation of Data Discussion
Visual Representation of Data
The purpose of this assignment is to use pivot tables and pivot charts to aggregate data and to explain the process used for data aggregation.
For this assignment, you will use the "Claims 2" dataset. Use Excel pivot tables and pivot charts for this exercise.
Part 1:
Create a dashboard describing the data by age group (e.g., 21-30 yrs, 31-40 yrs, 41-50 yrs, 51-60 yrs, and 61-70 yrs). The dashboard should include the graphs and charts listed in the locations described. The dashboard should be a separate tab in Excel that only includes the five items below. A sample layout is provided below the dashboard description.
Top Left: Bar graph showing the average number of ER visits for each of the five age groups. Show the actual average values above each bar.
Middle Left: Bar graph showing the average number of procedures for each of the five age groups. Show the actual average values above each bar.
Bottom Left: Bar graph showing the average claim cost for each of the five age groups. Show the actual average values above each bar.
Top Right: Pie chart showing the percent of the total sum of all claim costs for each of the five age groups. Show the actual percent values of each slice.
Bottom Right: Line graph showing the percent of each age group that has one or more ER visits. Show the actual percent values of each group. To create this chart, first create a new calculated column, named "Has ER Visit," that is equal to 1 when the patient has had one or more ER visits; otherwise 0. HINT: The average of a 0-1 column is a percent. Refer to the example in the resource "Visual Representation of Data Screenshot: Preview of the Excel Dashboard."
Part 2:
Interpret the dashboard and the story it is attempting to tell users by writing a 250-word summary that clearly describes the merits of each of the charts used on the dashboard. For example, discuss why a pie chart might be more appropriate than a bar graph for highlighting the information you want key stakeholders to obtain by studying that content on the dashboard. Include specific discussion about why each specific chart is used to illustrate the data it represents.
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Confidence Intervals Discussion
The B&K Real Estate Company sells homes and is currently serving the Southeast region. It has recently expanded to cover t ...
Confidence Intervals Discussion
The B&K Real Estate Company sells homes and is currently serving the Southeast region. It has recently expanded to cover the Northeast states. The B&K realtors are excited to now cover the entire East Coast and are working to prepare their southern agents to expand their reach to the Northeast.B&K has hired your company to analyze the Northeast home listing prices in order to give information to their agents about the mean listing price at 95% confidence. Your company offers three analysis packages: one based on a sample size of 100 listings, one based on 1,000 listings, and another based on a sample size of 4,000 listings. Because there is an additional cost for data collection, your company charges more for the package with 4,000 listings than for the package with 100 listings.Bronze Package - Sample size of 100 listings:95% confidence interval for the mean of the Northeast house listing price has a margin of error of $24,500Cost for service to B&K: $2,000Silver Package - Sample size of 1,000 listings:95% confidence interval for the mean of the Northeast house listing price has a margin of error of $7,750Cost for service to B&K: $10,000Gold Package - Sample size of 4,000 listings:95% confidence interval for the mean of the Northeast house listing price has a margin of error of $3,900Cost for service to B&K: $25,000The B&K management team does not understand the tradeoff between confidence level, sample size, and margin of error. B&K would like you to come back with your recommendation of the sample size that would provide the sales agents with the best understanding of northeast home prices at the lowest cost for service to B&K.In other words, which option is preferable?Spending more on data collection and having a smaller margin of errorSpending less on data collection and having a larger margin of errorChoosing an option somewhere in the middleFor your initial post:Formulate a recommendation and write a confidence statement in the context of this scenario. For the purposes of writing your confidence statement, assume the sample mean house listing price is $310,000 for all packages. “I am [#] % confident the true mean . . . [in context].”Explain the factors that went into your recommendation, including a discussion of the margin of errorFor your response posts to your peers, choose two different confidence intervals for your responses. Do you think the agents would prefer a different confidence interval than their management? What advantages and disadvantages would there be in having different confidence intervals for the agents? Explain your thought process and reasoning in your response.
Probability, Sampling Distribution, and Confidence, statistics homework help
Part 1Using the SPSS software, open the Afrobarometer dataset or the High School Longitudinal Study dataset (whichever you ...
Probability, Sampling Distribution, and Confidence, statistics homework help
Part 1Using the SPSS software, open the Afrobarometer dataset or the High School Longitudinal Study dataset (whichever you choose) found in this week’s Learning Resources.From the dataset you chose, choose one categorical and one continuous variable and perform the appropriate visual display for each variable.Once you visually display each variable, copy and paste your output into your Word document.For this Part 1 Assignment:Write a 2- to 3-paragraph analysis of your results and include a copy and paste of the appropriate visual display of the data into your document.Use appropriate APA format. Refer to the APA manual for appropriate citation.Part 2open the Afrobarometer dataset or the High School Longitudinal Study dataset from your Part 1 of your Assignment in Week 2.Choose the same two variables you chose from your Part 1 Assignment and perform the appropriate descriptive analysis of the data.Once you perform your descriptive analysis, review Chapter 11 of the Wagner text to understand how to copy and paste your output into your Word document.For this Part 2 Assignment:Write a 2- to 3-paragraph analysis of your descriptive analysis results and include a copy and paste your output from your analysis into your final document. Use appropriate APA format, citations and referencing. Refer to the APA manual for appropriate citation.Part 3open the Afrobarometer dataset or the High School Longitudinal Study dataset (whichever you chose) from Week 2.Choose an appropriate variable from Parts 1 and 2 of this Assignment and calculate a confidence interval in SPSS.Once you perform your confidence interval, review Chapter 5 and 11 of the Wagner text to understand how to copy and paste your output into your Word document.For this Part 3 Assignment:Write a 2- to 3-paragraph analysis of your results and include a copy and paste of the appropriate visual display of the data into your document.Use appropriate APA format. Refer to the APA manual for appropriate citation.
In the function shown in the chart below, between what values of x would you find the zeros of the function?
In the function shown in the chart below, between what values of&nb ...
In the function shown in the chart below, between what values of x would you find the zeros of the function?
In the function shown in the chart below, between what values of x would you find the zeros of the function?xf(x)-373-28-1-70-81-728373A. -1 and 0, 0 and 1B. -2 and -1, 1 and 2C. -7 and 8, -8 and -7D. 1 and -1
Statistics problems
Word document with questions is also attached, and answers must be put into the attached answer sheet. 1.True or False. Ju ...
Statistics problems
Word document with questions is also attached, and answers must be put into the attached answer sheet. 1.True or False. Justify for full credit.(a) If the variance of a data set is zero, then all the observations in this data set are zero. (b) If P(A) = 0.4 , P(B) = 0.5, and A and B are disjoint, then P(A AND B) = 0.9.(c)Assume X follows a continuous distribution which is symmetric about 0.If , then . (d)A 95% confidence interval is wider than a 90% confidence interval of the same parameter. (e)In a right-tailed test, the value of the test statistic is 1.5. If we know the test statistic follows a Student’s t-distribution with P(T < 1.5) = 0.96, then we fail to reject the null hypothesis at 0.05 level of significance .Refer to the following frequency distribution for Questions 2, 3, 4, and 5. Show all work. Just the answer, without supporting work, will receive no credit. The frequency distribution below shows the distribution for checkout time (in minutes) in UMUC MiniMart between 3:00 and 4:00 PM on a Friday afternoon. Checkout Time (in minutes) Frequency Relative Frequency 1.0 - 1.9 3 2.0 - 2.9 12 3.0 - 3.9 0.20 4.0 - 4.9 3 5.0 -5.9 Total 25 2.Complete the frequency table with frequency and relative frequency. Express the relative frequency to two decimal places. 3.What percentage of the checkout times was at least 3 minutes?4.In what class interval must the median lie?Explain your answer.5.Does this distribution have positive skew or negative skew? Why?Refer to the following information for Questions 6 and 7.Show all work. Just the answer, without supporting work, will receive no credit. Consider selecting one card at a time from a 52-card deck.(Note: There are 4 aces in a deck of cards) 6.If the card selection is with replacement, what is the probability that the first card is an ace and the second card is also an ace?(Express the answer in simplest fraction form) 7.If the card selection is without replacement, what is the probability that the first card is an ace and the second card is also an ace?(Express the answer in simplest fraction form) Refer to the following situation for Questions 8, 9, and 10. The five-number summary below shows the grade distribution of two STAT 200 quizzes for a sample of 500 students. Minimum Q1 Median Q3 Maximum Quiz 1 15 30 55 85 100 Quiz 2 20 35 50 90 100 For each question, give your answer as one of the following:(a) Quiz 1; (b) Quiz 2; (c) Both quizzes have the same value requested; (d) It is impossible to tell using only the given information. Then explain your answer in each case.8.Which quiz has less interquartile range in grade distribution?9.Which quiz has the greater percentage of students with grades 90 and over?10.Which quiz has a greater percentage of students with grades less than 60?Refer to the following information for Questions 11, 12, and 13. Show all work. Just the answer, without supporting work, will receive no credit. There are 1000 students in a high school.Among the 1000 students, 800 students have a laptop, and 300 students have a tablet.250 students have both devices.11.What is the probability that a randomly selected student has neither device?12.What is the probability that a randomly selected student has a laptop, given that he/she has a tablet?13.Let event A be the selected student having a laptop, and event B be the selected student having a tablet. Are A and B independent events?Why or why not?14.A combination lock uses three distinctive numbers between 0 and 39 inclusive.How many different ways can a sequence of three numbers be selected? (Show work)15.Let random variable x represent the number of heads when a fair coin is tossed three times.Show all work. Just the answer, without supporting work, will receive no credit. (a)Construct a table describing the probability distribution. (b)( Determine the mean and standard deviation of x. (Round the answer to two decimal places) 16.Mimi just started her tennis class three weeks ago. On average, she is able to return 20% of her opponent’s serves.Assume her opponent serves 10 times.(a)Let X be the number of returns that Mimi gets.As we know, the distribution of X is a binomial probability distribution. What is the number of trials (n), probability of successes (p) and probability of failures (q), respectively? (b)Find the probability that that she returns at least 1 of the 10 serves from her opponent. (Show work) Refer to the following information for Questions 17, 18, and 19. Show all work. Just the answer, without supporting work, will receive no credit. The lengths of mature jalapeño fruits are normally distributed with a mean of 3 inches and a standard deviation of 1 inch.17.What is the probability that a randomly selected mature jalapeño fruit is between 1.5 and 4 inches long?18.Find the 90th percentile of the jalapeño fruit length distribution.19. If a random sample of 100 mature jalapeño fruits is selected, what is the standard deviation of the sample mean? 20.A random sample of 100 light bulbs has a mean lifetime of 3000 hours. Assume that the population standard deviation of the lifetime is 500 hours. Construct a 95% confidence interval estimate of the mean lifetime. Show all work. Just the answer, without supporting work, will receive no credit. 21.Consider the hypothesis test given byH p0 : 0.5 H p1 : 0.5In a random sample of 625 subjects, the sample proportion is found to be pˆ 0.55. (a)Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit. (b)Determine the P-value for this test.Show all work; writing the correct P-value, without supporting work, will receive no credit.(c)Is there sufficient evidence to justify the rejection of H0 at the 0.01 level? Explain. 22.Consumption of large amounts of alcohol is known to increase reaction time. To investigate the effects of small amounts of alcohol, reaction time was recorded for five individuals before and after the consumption of 2 ounces of alcohol.Do the data below suggest that consumption of 2 ounces of alcohol increases mean reaction time? Reaction Time (seconds) Subject Before After 1 6 7 2 8 8 3 4 6 4 7 9 5 9 8 Assume we want to use a 0.05 significance level to test the claim. (a) Identify the null hypothesis and the alternative hypothesis.(b)Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit. (c)Determine the P-value. Show all work; writing the correct P-value, without supporting work, will receive no credit. (d) Is there sufficient evidence to support the claim that consumption of 2 ounces of alcohol increases mean reaction time? Justify your conclusion. 23.The UMUC MiniMart sells five different types of coffee mugs.The manager reports that the five types are equally popular.Suppose that a sample of 500 purchases yields observed counts 120, 90, 110, 100, and 80 for types 1, 2, 3, 4, and 5, respectively. Type 1 2 3 4 5 Number of Mugs 120 90 110 100 80 Assume we want to use a 0.05 significance level to test the claim that the five types are equally popular. (a)Identify the null hypothesis and the alternative hypothesis.(b)Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit. (c)Determine the P-value for the test. Show all work; writing the correct P-value, without supporting work, will receive no credit.(d)Is there sufficient evidence to support the manager’s claim that the four types are equally popular? Justify your answer.24.A random sample of 4 professional athletes produced the following data where x is the number of endorsements the player has and y is the amount of money made (in millions of dollars). x 0 1 3 5 y 1 2 5 8 (a)Find an equation of the least squares regression line.Show all work; writing the correct equation, without supporting work, will receive no credit.(b)Based on the equation from part (a), what is the predicted value of y if x = 2?Show all work and justify your answer.25. A STAT 200 instructor is interested in whether there is any variation in the final exam grades between her two classesData collected from the two classes are as follows: Her null hypothesis and alternative hypothesis are: (a)Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit. (b)Determine the P-value for this test.Show all work; writing the correct P-value, without supporting work, will receive no credit.(c)Is there sufficient evidence to justify the rejection of H0 at the significance level of 0.05? Explain.
LU Statistics Visual Representation of Data Discussion
Visual Representation of Data
The purpose of this assignment is to use pivot tables and pivot charts to aggregate data and ...
LU Statistics Visual Representation of Data Discussion
Visual Representation of Data
The purpose of this assignment is to use pivot tables and pivot charts to aggregate data and to explain the process used for data aggregation.
For this assignment, you will use the "Claims 2" dataset. Use Excel pivot tables and pivot charts for this exercise.
Part 1:
Create a dashboard describing the data by age group (e.g., 21-30 yrs, 31-40 yrs, 41-50 yrs, 51-60 yrs, and 61-70 yrs). The dashboard should include the graphs and charts listed in the locations described. The dashboard should be a separate tab in Excel that only includes the five items below. A sample layout is provided below the dashboard description.
Top Left: Bar graph showing the average number of ER visits for each of the five age groups. Show the actual average values above each bar.
Middle Left: Bar graph showing the average number of procedures for each of the five age groups. Show the actual average values above each bar.
Bottom Left: Bar graph showing the average claim cost for each of the five age groups. Show the actual average values above each bar.
Top Right: Pie chart showing the percent of the total sum of all claim costs for each of the five age groups. Show the actual percent values of each slice.
Bottom Right: Line graph showing the percent of each age group that has one or more ER visits. Show the actual percent values of each group. To create this chart, first create a new calculated column, named "Has ER Visit," that is equal to 1 when the patient has had one or more ER visits; otherwise 0. HINT: The average of a 0-1 column is a percent. Refer to the example in the resource "Visual Representation of Data Screenshot: Preview of the Excel Dashboard."
Part 2:
Interpret the dashboard and the story it is attempting to tell users by writing a 250-word summary that clearly describes the merits of each of the charts used on the dashboard. For example, discuss why a pie chart might be more appropriate than a bar graph for highlighting the information you want key stakeholders to obtain by studying that content on the dashboard. Include specific discussion about why each specific chart is used to illustrate the data it represents.
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