The mean of scores of four roommates.

Question

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Answer 1

Question

Chapter 7, Problem 119E

Section 1:

To determine

To find: The mean of scores of four roommates.

Section 1:

Expert Solution

Answer to Problem 119E

Solution: The required mean of the data is 153.50.

Explanation of Solution

Calculation: To obtain the mean, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click on OK two times.

The mean is obtained as 153.50.

Section 2:

To determine

To find: The standard deviation of scores of four roommates.

Section 2:

Expert Solution

Answer to Problem 119E

Solution: The standard deviation of the data is 14.71.

Explanation of Solution

Calculation: To obtain the standard deviation, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click OK twice.

The standard deviation is obtained as 14.71.

Section 3:

To determine

To find: The standard error of the mean.

Section 3:

Expert Solution

Answer to Problem 119E

Solution: The standard error is 7.35.

Explanation of Solution

Calculation: To obtain the standard error, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click OK twice.

The standard error is obtained as 7.35.

To determine

Whether it is correct to calculate the confidence interval for the data or not.

Expert Solution

Answer to Problem 119E

Solution: As the data cannot be considered as simple random sampling, the confidence interval should not be calculated for this data.

Explanation of Solution

To compute the confidence interval for any dataset, the data should belong to simple random sampling. In the provided case, the data cannot be considered as simple random sampling because of the small sample size. Therefore, it is not appropriate if the confidence interval is calculated on the basis of the provided data.

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Answer 2

Question

Chapter 7, Problem 119E

Section 1:

To determine

To find: The mean of scores of four roommates.

Section 1:

Expert Solution

Answer to Problem 119E

Solution: The required mean of the data is 153.50.

Explanation of Solution

Calculation: To obtain the mean, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click on OK two times.

The mean is obtained as 153.50.

Section 2:

To determine

To find: The standard deviation of scores of four roommates.

Section 2:

Expert Solution

Answer to Problem 119E

Solution: The standard deviation of the data is 14.71.

Explanation of Solution

Calculation: To obtain the standard deviation, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click OK twice.

The standard deviation is obtained as 14.71.

Section 3:

To determine

To find: The standard error of the mean.

Section 3:

Expert Solution

Answer to Problem 119E

Solution: The standard error is 7.35.

Explanation of Solution

Calculation: To obtain the standard error, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click OK twice.

The standard error is obtained as 7.35.

To determine

Whether it is correct to calculate the confidence interval for the data or not.

Expert Solution

Answer to Problem 119E

Solution: As the data cannot be considered as simple random sampling, the confidence interval should not be calculated for this data.

Explanation of Solution

To compute the confidence interval for any dataset, the data should belong to simple random sampling. In the provided case, the data cannot be considered as simple random sampling because of the small sample size. Therefore, it is not appropriate if the confidence interval is calculated on the basis of the provided data.

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Answer 3

Question

Chapter 7, Problem 119E

Section 1:

To determine

To find: The mean of scores of four roommates.

Section 1:

Expert Solution

Answer to Problem 119E

Solution: The required mean of the data is 153.50.

Explanation of Solution

Calculation: To obtain the mean, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click on OK two times.

The mean is obtained as 153.50.

Section 2:

To determine

To find: The standard deviation of scores of four roommates.

Section 2:

Expert Solution

Answer to Problem 119E

Solution: The standard deviation of the data is 14.71.

Explanation of Solution

Calculation: To obtain the standard deviation, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click OK twice.

The standard deviation is obtained as 14.71.

Section 3:

To determine

To find: The standard error of the mean.

Section 3:

Expert Solution

Answer to Problem 119E

Solution: The standard error is 7.35.

Explanation of Solution

Calculation: To obtain the standard error, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click OK twice.

The standard error is obtained as 7.35.

To determine

Whether it is correct to calculate the confidence interval for the data or not.

Expert Solution

Answer to Problem 119E

Solution: As the data cannot be considered as simple random sampling, the confidence interval should not be calculated for this data.

Explanation of Solution

To compute the confidence interval for any dataset, the data should belong to simple random sampling. In the provided case, the data cannot be considered as simple random sampling because of the small sample size. Therefore, it is not appropriate if the confidence interval is calculated on the basis of the provided data.

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Answer 4

Question

Chapter 7, Problem 119E

Section 1:

To determine

To find: The mean of scores of four roommates.

Section 1:

Expert Solution

Answer to Problem 119E

Solution: The required mean of the data is 153.50.

Explanation of Solution

Calculation: To obtain the mean, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click on OK two times.

The mean is obtained as 153.50.

Section 2:

To determine

To find: The standard deviation of scores of four roommates.

Section 2:

Expert Solution

Answer to Problem 119E

Solution: The standard deviation of the data is 14.71.

Explanation of Solution

Calculation: To obtain the standard deviation, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click OK twice.

The standard deviation is obtained as 14.71.

Section 3:

To determine

To find: The standard error of the mean.

Section 3:

Expert Solution

Answer to Problem 119E

Solution: The standard error is 7.35.

Explanation of Solution

Calculation: To obtain the standard error, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click OK twice.

The standard error is obtained as 7.35.

To determine

Whether it is correct to calculate the confidence interval for the data or not.

Expert Solution

Answer to Problem 119E

Solution: As the data cannot be considered as simple random sampling, the confidence interval should not be calculated for this data.

Explanation of Solution

To compute the confidence interval for any dataset, the data should belong to simple random sampling. In the provided case, the data cannot be considered as simple random sampling because of the small sample size. Therefore, it is not appropriate if the confidence interval is calculated on the basis of the provided data.

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Answer 5

Chapter 7, Problem 119E

Section 1:

To determine

To find: The mean of scores of four roommates.

Section 1:

Expert Solution

Answer to Problem 119E

Solution: The required mean of the data is 153.50.

Explanation of Solution

Calculation: To obtain the mean, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click on OK two times.

The mean is obtained as 153.50.

Section 2:

To determine

To find: The standard deviation of scores of four roommates.

Section 2:

Expert Solution

Answer to Problem 119E

Solution: The standard deviation of the data is 14.71.

Explanation of Solution

Calculation: To obtain the standard deviation, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click OK twice.

The standard deviation is obtained as 14.71.

Section 3:

To determine

To find: The standard error of the mean.

Section 3:

Expert Solution

Answer to Problem 119E

Solution: The standard error is 7.35.

Explanation of Solution

Calculation: To obtain the standard error, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click OK twice.

The standard error is obtained as 7.35.

To determine

Whether it is correct to calculate the confidence interval for the data or not.

Expert Solution

Answer to Problem 119E

Solution: As the data cannot be considered as simple random sampling, the confidence interval should not be calculated for this data.

Explanation of Solution

To compute the confidence interval for any dataset, the data should belong to simple random sampling. In the provided case, the data cannot be considered as simple random sampling because of the small sample size. Therefore, it is not appropriate if the confidence interval is calculated on the basis of the provided data.

Answer 6

Chapter 7, Problem 119E

Section 1:

To determine

To find: The mean of scores of four roommates.

Section 1:

Expert Solution

Answer to Problem 119E

Solution: The required mean of the data is 153.50.

Explanation of Solution

Calculation: To obtain the mean, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click on OK two times.

The mean is obtained as 153.50.

Answer 7

Chapter 7, Problem 119E

Section 1:

To determine

To find: The mean of scores of four roommates.

Answer 8

Section 1:

Expert Solution

Answer to Problem 119E

Solution: The required mean of the data is 153.50.

Answer 9

Section 1:

Expert Solution

Answer 10

Section 1:

Expert Solution

Answer 11

Expert Solution

Answer 12

Explanation of Solution

Calculation: To obtain the mean, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click on OK two times.

The mean is obtained as 153.50.

Answer 13

Section 2:

To determine

To find: The standard deviation of scores of four roommates.

Section 2:

Expert Solution

Answer to Problem 119E

Solution: The standard deviation of the data is 14.71.

Explanation of Solution

Calculation: To obtain the standard deviation, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click OK twice.

The standard deviation is obtained as 14.71.

Answer 14

Section 2:

To determine

To find: The standard deviation of scores of four roommates.

Answer 15

Section 2:

Expert Solution

Answer to Problem 119E

Solution: The standard deviation of the data is 14.71.

Answer 16

Section 2:

Expert Solution

Answer 17

Section 2:

Expert Solution

Answer 18

Expert Solution

Answer 19

Explanation of Solution

Calculation: To obtain the standard deviation, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click OK twice.

The standard deviation is obtained as 14.71.

Answer 20

Section 3:

To determine

To find: The standard error of the mean.

Section 3:

Expert Solution

Answer to Problem 119E

Solution: The standard error is 7.35.

Explanation of Solution

Calculation: To obtain the standard error, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click OK twice.

The standard error is obtained as 7.35.

Answer 21

Section 3:

To determine

To find: The standard error of the mean.

Answer 22

Section 3:

Expert Solution

Answer to Problem 119E

Solution: The standard error is 7.35.

Answer 23

Section 3:

Expert Solution

Answer 24

Section 3:

Expert Solution

Answer 25

Expert Solution

Answer 26

Explanation of Solution

Calculation: To obtain the standard error, follow the steps below in Minitab software.

Step 1: Enter the data in the Minitab worksheet.

Step 2: Go to Stat and select the basic statistics, and then click on display the descriptive statistics.

Step 3: Enter the variable in the variables column.

Step 4: Choose the options as mean.

Step 5: Click OK twice.

The standard error is obtained as 7.35.

Answer 27

To determine

Whether it is correct to calculate the confidence interval for the data or not.

Expert Solution

Answer to Problem 119E

Solution: As the data cannot be considered as simple random sampling, the confidence interval should not be calculated for this data.

Explanation of Solution

To compute the confidence interval for any dataset, the data should belong to simple random sampling. In the provided case, the data cannot be considered as simple random sampling because of the small sample size. Therefore, it is not appropriate if the confidence interval is calculated on the basis of the provided data.

Answer 28

To determine

Whether it is correct to calculate the confidence interval for the data or not.

Answer 29

Expert Solution

Answer to Problem 119E

Solution: As the data cannot be considered as simple random sampling, the confidence interval should not be calculated for this data.

Answer 30

Expert Solution

Answer 31

Expert Solution

Answer 32

Expert Solution

Answer 33

Explanation of Solution

To compute the confidence interval for any dataset, the data should belong to simple random sampling. In the provided case, the data cannot be considered as simple random sampling because of the small sample size. Therefore, it is not appropriate if the confidence interval is calculated on the basis of the provided data.