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The area of a trapezium is 1/2 × h × (a + b)hence 1/2 x 8(16+12)=112
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Northeastern University Week 2 Standard Error Statistics Questions
Fully answer each questions. Throughly display all work for each problem. If you have any question, let me know.
Northeastern University Week 2 Standard Error Statistics Questions
Fully answer each questions. Throughly display all work for each problem. If you have any question, let me know.
12 pages
MATGAM02 Rasmussen Section 2 Module 2 Mathematics of Games Quiz
An event X can happen with probability P and Y can happen with P'. What is the probability that exactly one
MATGAM02 Rasmussen Section 2 Module 2 Mathematics of Games Quiz
An event X can happen with probability P and Y can happen with P'. What is the probability that exactly one
make it 100!
At the time she was hired as a server at the Grumney Family Restaurant, Beth Brigden was told, “You can average $88 a da ...
make it 100!
At the time she was hired as a server at the Grumney Family Restaurant, Beth Brigden was told, “You can average $88 a day in tips.” Assume the population of daily tips is normally distributed with a standard deviation of $2.50. Over the first 50 days she was employed at the restaurant, the mean daily amount of her tips was $89.93. At the 0.10 significance level, can Ms. Brigden conclude that her daily tips average more than $88?a.State the null hypothesis and the alternate hypothesis. H0: μ >88 ; H1: μ = 88H0: μ ≥ 88 ; H1: μ < 88H0: μ = 88 ; H1: μ ≠ 88H0: μ ≤ 88 ; H1: μ > 88b.State the decision rule. Reject H1 if z < 1.28Reject H1 if z > 1.28Reject H0 if z < 1.28Reject H0 if z > 1.28c.Compute the value of the test statistic. (Round your answer to 2 decimal places.) Value of the test statistic d.What is your decision regarding H0? Reject H0Do not reject H0e.What is the p-value? (Round your answer to 4 decimal places.) p-value 2.A sample of 39 observations is selected from a normal population. The sample mean is 31, and the population standard deviation is 5. Conduct the following test of hypothesis using the 0.05 significance level. H0 : μ ≤ 30H1 : μ > 30a.Is this a one- or two-tailed test? "Two-tailed"-the alternate hypothesis is different from direction."One-tailed"-the alternate hypothesis is greater than direction.b.What is the decision rule? (Round your answer to 3 decimal places.) (Click to select)RejectDo not reject H0, when z > c.What is the value of the test statistic? (Round your answer to 2 decimal places.) Value of the test statistic d.What is your decision regarding H0? Do not rejectRejectThere is (Click to select)insufficientsufficient evidence to conclude that the population mean is greater than 30.e.What is the p-value? (Round your answer to 4 decimal places.) p-value 3.The following information is available.H0 : μ ≥ 220H1 : μ < 220A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis using the .025 significance level.a.Is this a one- or two-tailed test? Two-tailed testOne-tailed testb.What is the decision rule? (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.) (Click to select)RejectDo not reject H0 when z < c.What is the value of the test statistic? (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.) Value of the test statistic d.What is your decision regarding H0? RejectDo not rejecte.What is the p-value? (Round your answer to 4 decimal places.) p-value The amount of water consumed each day by a healthy adult follows a normal distribution with a mean of 1.50 liters. A sample of 10 adults after the campaign shows the following consumption in liters. A health campaign promotes the consumption of at least 2.0 liters per day: 1.52 1.64 1.66 1.40 1.82 1.70 1.90 1.45 1.78 1.92At the 0.010 significance level, can we conclude that water consumption has increased? Calculate and interpret the p-value. Click here for the Excel Data Filea.State the null hypothesis and the alternate hypothesis. (Round your answers to 2 decimal places.) H0: μ ≤ H1: μ > b.State the decision rule for 0.010 significance level. (Round your answer to 3 decimal places.) Reject H0 if t > c.Compute the value of the test statistic. (Round your intermediate and final answer to 3 decimal places.) Value of the test statistic d.At the 0.010 level, can we conclude that water consumption has increased? (Click to select)Fail to rejectReject H0 and conclude that water consumption has (Click to select)not increasedincreased.e.Estimate the p-value. p-value is(Click to select)between 0.0005 and 0.005between 0.01 and 0.025less than 0.0005between 0.005 and 0.01greater than 0.10between 0.05 and 0.10between 0.025 and 0.05 5.Watch Corporation of Switzerland claims that its watches on average will neither gain nor lose time during a week. A sample of 18 watches provided the following gains (+) or losses (–) in seconds per week. Click here for the Excel Data File–0.16–0.15–0.20–0.17+0.26–0.19+0.30+0.43–0.10–0.31–0.48–0.44–0.51–0.67–0.05–0.24–0.51+0.05a-1.Is it reasonable to conclude that the mean gain or loss in time for the watches is 0? Use the .05 significance level. At a level of .05 significance, we reject H0: μ = 0 if t < or t > . (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places.) a-2.The value of the test statistic is . (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)a-3.(Click to select)RejectDo not reject H0: μ = 0. The p-value is (Click to select)greater than 0.20between 0.0100 and 0.020less than 0.001between 0.020 and 0.056.A United Nations report shows the mean family income for Mexican migrants to the United States is $28,540 per year. A FLOC (Farm Labor Organizing Committee) evaluation of 26 Mexican family units reveals a mean to be $30,500 with a sample standard deviation of $10,500. Does this information disagree with the United Nations report? Apply the 0.01 significance level.a.State the null hypothesis and the alternate hypothesis. H0: μ = H1: μ ≠ b.State the decision rule for .01 significance level. (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places.) Reject H0 if t is not between and c.Compute the value of the test statistic. (Round your answer to 3 decimal places.) Value of the test statistic d.Does this information disagree with the United Nations report? Apply the 0.01 significance level. (Click to select)Do not reject HoReject Ho. This data (Click to select)contradictsdoes not contradict the report.7.A national grocer’s magazine reports the typical shopper spends 5 minutes in line waiting to check out. A sample of 15 shoppers at the local Farmer Jack’s showed a mean of 4.2 minutes with a standard deviation of 3.8 minutes. Is the waiting time at the local Farmer Jack’s less than that reported in the national magazine? Use the 0.010 significance level.a.What is the decision rule? (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.) Reject H0: µ ≥ 5 when the test statistic is (Click to select)greater thanless thanequal to . b.The value of the test statistic is . (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)c.What is your decision regarding H0? Do not reject H0Reject H08.The American Water Works Association reports that the per capita water use in a single-family home is 80 gallons per day. Legacy Ranch is a relatively new housing development. The builders installed more efficient water fixtures, such as low-flush toilets, and subsequently conducted a survey of the residences. Twenty-six owners responded, and the sample mean water use per day was 78 gallons with a standard deviation of 7.2 gallons per day.At the 0.01 level of significance, is that enough evidence to conclude that residents of Legacy Ranch use less water on average?a.What is the decision rule? (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.) Reject H0: µ ≥ 80 when the test statistic is (Click to select)less thanmore than .b.The value of the test statistic is . (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)c.What is your decision regarding H0? RejectFail to reject
Statistics Question
A program admissions coordinator wanted to know if the math placement test given to a certain cohort of students was an in ...
Statistics Question
A program admissions coordinator wanted to know if the math placement test given to a certain cohort of students was an indicator of how well they would perform on their first exam. She records the scores of their placement test and the first exam and then runs a regression test in JASP shown below. Is there a correlation between these measures? Placement Exam 1 11 49 27 71 7 60 33 85 28 80 23 75 20 61 48 100 35 71 26 81 Pearson's Correlations Variable Placement Exam 1 1. Placement Pearson's r — p-value — 2. Exam 1 Pearson's r 0.876 *** — p-value < .001 — * p < .05, ** p < .01, *** p < .001
SPSS assignment, statistics homework help
On page 194 of your coursepack, there is a short 4 question survey on NBC.On page 195, you have the names of each var ...
SPSS assignment, statistics homework help
On page 194 of your coursepack, there is a short 4 question survey on NBC.On page 195, you have the names of each variable from the questionnaire. For example, the variable, Blacklist, corresponds to the first question on page 194 (Which of the following shows do you watch on regular basis?).On page 196, you have the actual data. "W" refers to watch and "DW" refers to doesn't watch. The.refore the first person who filled out the survey does not watch Blacklist.On page 197, you can find the questions that you must answer for the assignment.Open up the file below in SPSS. It corresponds to the data on page 196. (The file's name is SPSS NBC data) Unfortunately the SPSS file cannot be attached here. You will find all the data on page 196.Once you open the file, please complete the following steps:A) Enter in the data for the three variable columns that are empty: Shark Tank (1 for watch, 2 for don't watch), Walking Dead (1 for watch, 2 for don't watch) and Age (Just enter the actual age). The data is on page 196. Be sure to give labels and values for each of the variables that you enter, where applicable.B) Start running the analyses to answer the questions on page 197. Below, you will find a file to guide your analysis. (The name of the file is NBC Assignment: How to approach)C) After you run the data for each question, cut and paste the relevant (frequency, mean, cross-tab, ANOVA, chi square) tables into Word and type out the answer in words.When you are copying the tables from SPSS to Word, you may need to copy them as a picture/image; alternatively you can use a snipping tool. If you just supply tables without typed answers you will receive zero on this assignment. The same is true if you just supply answers without tables. In the file below, you can see a sample answer for the first question, as well as an example of a Cross-Tab and ANOVA answer.I have uploaded all files.
Case Study : Airforce training program
Please refer the word document attached and write the case study accordingly.An Air Force introductory course in electroni ...
Case Study : Airforce training program
Please refer the word document attached and write the case study accordingly.An Air Force introductory course in electronics uses apersonalized system of instruction whereby each student viewsa videotaped lecture and then is given a programmedinstruction text. The students work independently with the textuntil they have completed the training and passed a test. Ofconcern is the varying pace at which the students complete thisportion of their training program. Some students are able tocover the programmed instruction text relatively quickly,whereas other students work much longer with the text andrequire additional time to complete the course. The faststudents wait until the slow students complete the introductorycourse before the entire group proceeds together with otheraspects of their training.A proposed alternative system involves use of computer-assisted instruction. In this method, all students view the samevideotaped lecture and then each is assigned to a computerterminal for further instruction. The computer guides thestudent, working independently, through the self-trainingportion of the course.To compare the proposed and current methods of instruction,an entering class of 122 students was assigned randomly to oneof the two methods. One group of 61 students used the currentprogrammed-text method and the other group of 61 studentsused the proposed computer-assisted method. The time inhours was recorded for each student in the study. The followingdata are provided in the data set Training.DataFile:Course Completion Times (hours) for Current Training Method76 76 77 74 76 74 74 77 72 78 7378 75 80 79 72 69 79 72 70 70 8176 78 72 82 72 73 71 70 77 78 7379 82 65 77 79 73 76 81 69 75 7577 79 76 78 76 76 73 77 84 74 7469 79 66 70 74 72Course Completion Times (hours) for Proposed Computer-Assisted Method74 75 77 78 74 80 73 73 78 76 7674 77 69 76 75 72 75 72 76 72 7773 77 69 77 75 76 74 77 75 78 7277 78 78 76 75 76 76 75 76 80 7776 75 73 77 77 77 79 75 75 72 8276 76 74 72 78 71Managerial Report1. Use appropriate descriptive statistics to summarize the trainingtime data for each method. What similarities or differences doyou observe from the sample data?2. Use the methods of Chapter 10 to comment on any differencebetween the population means for the two methods. Discussyour findings.3. Compute the standard deviation and variance for each trainingmethod. Conduct a hypothesis test about the equality ofpopulation variances for the two training methods. Discuss yourfindings.4. What conclusion can you reach about any differences betweenthe two methods? What is your recommendation? Explain.5. Can you suggest other data or testing that might be desirablebefore making a final decision on the training program to beused in the future?
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Northeastern University Week 2 Standard Error Statistics Questions
Fully answer each questions. Throughly display all work for each problem. If you have any question, let me know.
Northeastern University Week 2 Standard Error Statistics Questions
Fully answer each questions. Throughly display all work for each problem. If you have any question, let me know.
12 pages
MATGAM02 Rasmussen Section 2 Module 2 Mathematics of Games Quiz
An event X can happen with probability P and Y can happen with P'. What is the probability that exactly one
MATGAM02 Rasmussen Section 2 Module 2 Mathematics of Games Quiz
An event X can happen with probability P and Y can happen with P'. What is the probability that exactly one
make it 100!
At the time she was hired as a server at the Grumney Family Restaurant, Beth Brigden was told, “You can average $88 a da ...
make it 100!
At the time she was hired as a server at the Grumney Family Restaurant, Beth Brigden was told, “You can average $88 a day in tips.” Assume the population of daily tips is normally distributed with a standard deviation of $2.50. Over the first 50 days she was employed at the restaurant, the mean daily amount of her tips was $89.93. At the 0.10 significance level, can Ms. Brigden conclude that her daily tips average more than $88?a.State the null hypothesis and the alternate hypothesis. H0: μ >88 ; H1: μ = 88H0: μ ≥ 88 ; H1: μ < 88H0: μ = 88 ; H1: μ ≠ 88H0: μ ≤ 88 ; H1: μ > 88b.State the decision rule. Reject H1 if z < 1.28Reject H1 if z > 1.28Reject H0 if z < 1.28Reject H0 if z > 1.28c.Compute the value of the test statistic. (Round your answer to 2 decimal places.) Value of the test statistic d.What is your decision regarding H0? Reject H0Do not reject H0e.What is the p-value? (Round your answer to 4 decimal places.) p-value 2.A sample of 39 observations is selected from a normal population. The sample mean is 31, and the population standard deviation is 5. Conduct the following test of hypothesis using the 0.05 significance level. H0 : μ ≤ 30H1 : μ > 30a.Is this a one- or two-tailed test? "Two-tailed"-the alternate hypothesis is different from direction."One-tailed"-the alternate hypothesis is greater than direction.b.What is the decision rule? (Round your answer to 3 decimal places.) (Click to select)RejectDo not reject H0, when z > c.What is the value of the test statistic? (Round your answer to 2 decimal places.) Value of the test statistic d.What is your decision regarding H0? Do not rejectRejectThere is (Click to select)insufficientsufficient evidence to conclude that the population mean is greater than 30.e.What is the p-value? (Round your answer to 4 decimal places.) p-value 3.The following information is available.H0 : μ ≥ 220H1 : μ < 220A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis using the .025 significance level.a.Is this a one- or two-tailed test? Two-tailed testOne-tailed testb.What is the decision rule? (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.) (Click to select)RejectDo not reject H0 when z < c.What is the value of the test statistic? (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.) Value of the test statistic d.What is your decision regarding H0? RejectDo not rejecte.What is the p-value? (Round your answer to 4 decimal places.) p-value The amount of water consumed each day by a healthy adult follows a normal distribution with a mean of 1.50 liters. A sample of 10 adults after the campaign shows the following consumption in liters. A health campaign promotes the consumption of at least 2.0 liters per day: 1.52 1.64 1.66 1.40 1.82 1.70 1.90 1.45 1.78 1.92At the 0.010 significance level, can we conclude that water consumption has increased? Calculate and interpret the p-value. Click here for the Excel Data Filea.State the null hypothesis and the alternate hypothesis. (Round your answers to 2 decimal places.) H0: μ ≤ H1: μ > b.State the decision rule for 0.010 significance level. (Round your answer to 3 decimal places.) Reject H0 if t > c.Compute the value of the test statistic. (Round your intermediate and final answer to 3 decimal places.) Value of the test statistic d.At the 0.010 level, can we conclude that water consumption has increased? (Click to select)Fail to rejectReject H0 and conclude that water consumption has (Click to select)not increasedincreased.e.Estimate the p-value. p-value is(Click to select)between 0.0005 and 0.005between 0.01 and 0.025less than 0.0005between 0.005 and 0.01greater than 0.10between 0.05 and 0.10between 0.025 and 0.05 5.Watch Corporation of Switzerland claims that its watches on average will neither gain nor lose time during a week. A sample of 18 watches provided the following gains (+) or losses (–) in seconds per week. Click here for the Excel Data File–0.16–0.15–0.20–0.17+0.26–0.19+0.30+0.43–0.10–0.31–0.48–0.44–0.51–0.67–0.05–0.24–0.51+0.05a-1.Is it reasonable to conclude that the mean gain or loss in time for the watches is 0? Use the .05 significance level. At a level of .05 significance, we reject H0: μ = 0 if t < or t > . (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places.) a-2.The value of the test statistic is . (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)a-3.(Click to select)RejectDo not reject H0: μ = 0. The p-value is (Click to select)greater than 0.20between 0.0100 and 0.020less than 0.001between 0.020 and 0.056.A United Nations report shows the mean family income for Mexican migrants to the United States is $28,540 per year. A FLOC (Farm Labor Organizing Committee) evaluation of 26 Mexican family units reveals a mean to be $30,500 with a sample standard deviation of $10,500. Does this information disagree with the United Nations report? Apply the 0.01 significance level.a.State the null hypothesis and the alternate hypothesis. H0: μ = H1: μ ≠ b.State the decision rule for .01 significance level. (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places.) Reject H0 if t is not between and c.Compute the value of the test statistic. (Round your answer to 3 decimal places.) Value of the test statistic d.Does this information disagree with the United Nations report? Apply the 0.01 significance level. (Click to select)Do not reject HoReject Ho. This data (Click to select)contradictsdoes not contradict the report.7.A national grocer’s magazine reports the typical shopper spends 5 minutes in line waiting to check out. A sample of 15 shoppers at the local Farmer Jack’s showed a mean of 4.2 minutes with a standard deviation of 3.8 minutes. Is the waiting time at the local Farmer Jack’s less than that reported in the national magazine? Use the 0.010 significance level.a.What is the decision rule? (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.) Reject H0: µ ≥ 5 when the test statistic is (Click to select)greater thanless thanequal to . b.The value of the test statistic is . (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)c.What is your decision regarding H0? Do not reject H0Reject H08.The American Water Works Association reports that the per capita water use in a single-family home is 80 gallons per day. Legacy Ranch is a relatively new housing development. The builders installed more efficient water fixtures, such as low-flush toilets, and subsequently conducted a survey of the residences. Twenty-six owners responded, and the sample mean water use per day was 78 gallons with a standard deviation of 7.2 gallons per day.At the 0.01 level of significance, is that enough evidence to conclude that residents of Legacy Ranch use less water on average?a.What is the decision rule? (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.) Reject H0: µ ≥ 80 when the test statistic is (Click to select)less thanmore than .b.The value of the test statistic is . (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)c.What is your decision regarding H0? RejectFail to reject
Statistics Question
A program admissions coordinator wanted to know if the math placement test given to a certain cohort of students was an in ...
Statistics Question
A program admissions coordinator wanted to know if the math placement test given to a certain cohort of students was an indicator of how well they would perform on their first exam. She records the scores of their placement test and the first exam and then runs a regression test in JASP shown below. Is there a correlation between these measures? Placement Exam 1 11 49 27 71 7 60 33 85 28 80 23 75 20 61 48 100 35 71 26 81 Pearson's Correlations Variable Placement Exam 1 1. Placement Pearson's r — p-value — 2. Exam 1 Pearson's r 0.876 *** — p-value < .001 — * p < .05, ** p < .01, *** p < .001
SPSS assignment, statistics homework help
On page 194 of your coursepack, there is a short 4 question survey on NBC.On page 195, you have the names of each var ...
SPSS assignment, statistics homework help
On page 194 of your coursepack, there is a short 4 question survey on NBC.On page 195, you have the names of each variable from the questionnaire. For example, the variable, Blacklist, corresponds to the first question on page 194 (Which of the following shows do you watch on regular basis?).On page 196, you have the actual data. "W" refers to watch and "DW" refers to doesn't watch. The.refore the first person who filled out the survey does not watch Blacklist.On page 197, you can find the questions that you must answer for the assignment.Open up the file below in SPSS. It corresponds to the data on page 196. (The file's name is SPSS NBC data) Unfortunately the SPSS file cannot be attached here. You will find all the data on page 196.Once you open the file, please complete the following steps:A) Enter in the data for the three variable columns that are empty: Shark Tank (1 for watch, 2 for don't watch), Walking Dead (1 for watch, 2 for don't watch) and Age (Just enter the actual age). The data is on page 196. Be sure to give labels and values for each of the variables that you enter, where applicable.B) Start running the analyses to answer the questions on page 197. Below, you will find a file to guide your analysis. (The name of the file is NBC Assignment: How to approach)C) After you run the data for each question, cut and paste the relevant (frequency, mean, cross-tab, ANOVA, chi square) tables into Word and type out the answer in words.When you are copying the tables from SPSS to Word, you may need to copy them as a picture/image; alternatively you can use a snipping tool. If you just supply tables without typed answers you will receive zero on this assignment. The same is true if you just supply answers without tables. In the file below, you can see a sample answer for the first question, as well as an example of a Cross-Tab and ANOVA answer.I have uploaded all files.
Case Study : Airforce training program
Please refer the word document attached and write the case study accordingly.An Air Force introductory course in electroni ...
Case Study : Airforce training program
Please refer the word document attached and write the case study accordingly.An Air Force introductory course in electronics uses apersonalized system of instruction whereby each student viewsa videotaped lecture and then is given a programmedinstruction text. The students work independently with the textuntil they have completed the training and passed a test. Ofconcern is the varying pace at which the students complete thisportion of their training program. Some students are able tocover the programmed instruction text relatively quickly,whereas other students work much longer with the text andrequire additional time to complete the course. The faststudents wait until the slow students complete the introductorycourse before the entire group proceeds together with otheraspects of their training.A proposed alternative system involves use of computer-assisted instruction. In this method, all students view the samevideotaped lecture and then each is assigned to a computerterminal for further instruction. The computer guides thestudent, working independently, through the self-trainingportion of the course.To compare the proposed and current methods of instruction,an entering class of 122 students was assigned randomly to oneof the two methods. One group of 61 students used the currentprogrammed-text method and the other group of 61 studentsused the proposed computer-assisted method. The time inhours was recorded for each student in the study. The followingdata are provided in the data set Training.DataFile:Course Completion Times (hours) for Current Training Method76 76 77 74 76 74 74 77 72 78 7378 75 80 79 72 69 79 72 70 70 8176 78 72 82 72 73 71 70 77 78 7379 82 65 77 79 73 76 81 69 75 7577 79 76 78 76 76 73 77 84 74 7469 79 66 70 74 72Course Completion Times (hours) for Proposed Computer-Assisted Method74 75 77 78 74 80 73 73 78 76 7674 77 69 76 75 72 75 72 76 72 7773 77 69 77 75 76 74 77 75 78 7277 78 78 76 75 76 76 75 76 80 7776 75 73 77 77 77 79 75 75 72 8276 76 74 72 78 71Managerial Report1. Use appropriate descriptive statistics to summarize the trainingtime data for each method. What similarities or differences doyou observe from the sample data?2. Use the methods of Chapter 10 to comment on any differencebetween the population means for the two methods. Discussyour findings.3. Compute the standard deviation and variance for each trainingmethod. Conduct a hypothesis test about the equality ofpopulation variances for the two training methods. Discuss yourfindings.4. What conclusion can you reach about any differences betweenthe two methods? What is your recommendation? Explain.5. Can you suggest other data or testing that might be desirablebefore making a final decision on the training program to beused in the future?
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