The waiting times (in minutes) of a random sample of 22 people at a bank have a sample standard deviation of 4.5 minutes. Construct a confidence interval for the population variance o² and the population standard deviation o. Use a 95% level of confidence. Assume the sample is from a normally distributed population. What is the confidence interval for the population variance o (Round to one decimal place as needed.) Interpret the results. Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to one decimal place as needed.) OA. With 95% confidence, you can say that the population variance is between and OC. With 95% confidence, you can say that the population variance is less than OB. With 5% confidence, you can say that the population variance is greater than OA. With 5% confidence, you can say that the population standard deviation is less than minutes. OD. With 5% confidence, you can say that the population variance is between and What is the confidence interval for the population standard deviation o? (Round to one decimal place as needed.) Interpret the results. Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to one decimal place as needed.) B. With 95% confidence, you can say that the population standard deviation is greater than minutes.
The waiting times (in minutes) of a random sample of 22 people at a bank have a sample standard deviation of 4.5 minutes. Construct a confidence interval for the population variance o² and the population standard deviation o. Use a 95% level of confidence. Assume the sample is from a normally distributed population. What is the confidence interval for the population variance o (Round to one decimal place as needed.) Interpret the results. Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to one decimal place as needed.) OA. With 95% confidence, you can say that the population variance is between and OC. With 95% confidence, you can say that the population variance is less than OB. With 5% confidence, you can say that the population variance is greater than OA. With 5% confidence, you can say that the population standard deviation is less than minutes. OD. With 5% confidence, you can say that the population variance is between and What is the confidence interval for the population standard deviation o? (Round to one decimal place as needed.) Interpret the results. Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to one decimal place as needed.) B. With 95% confidence, you can say that the population standard deviation is greater than minutes.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The waiting times (in minutes) of a random sample of 22 people at a bank have a sample standard deviation of 4.5
2
minutes. Construct a confidence interval for the population variance of and the population standard deviation o. Use a
95% level of confidence. Assume the sample is from a normally distributed population.
What is the confidence interval for the population variance of?
(Round to one decimal place as needed.)
Interpret the results. Select the correct choice below and fill in the answer box(es) to complete your choice.
(Round to one decimal place as needed.)
OA. With 95% confidence, you can say that the
population variance is between and
OC. With 95% confidence, you can say that the
population variance is less than
OB. With 5% confidence, you can say that the
population variance is greater than
OA. With 5% confidence, you can say that the
population standard deviation is less than
minutes.
OD. With 5% confidence, you can say that the
population variance is between and
What is the confidence interval for the population standard deviation o?
(Round to one decimal place as needed.)
Interpret the results. Select the correct choice below and fill in the answer box(es) to complete your choice.
(Round to one decimal place as needed.)
A
OB. With 95% confidence, you can say that the
population standard deviation is greater than
minutes.
0
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