The waiting times (in minutes) of a random sample of 20 people at a bank have a sample standard deviation of 4.4 minutes. Construct a confidence interval for the population variance of and the population standard deviation o. Use a 99% level of confidence. Assume the sample is from a normally distributed population. What is the confidence interval for the population variance o2? ( D (Round to one decimal place as needed.) nterpret 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 99% confidence, you can say that the population variance is greater O B. With 1% confidence, you can say that the population variance is less than than OC. With 99% confidence, you can say that the population variance is O D. With 1% confidence, you can say that the population variance is between between and and What ishe conidence interval for the population standard deviation o? ( DRound to one decimal place as needed.) Interprel 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.) O A. With 99% confidence, you can say that the population standard deviation O B. With 1% confidence, you can say that the population standard deviation is greater than minutes is between and minutes. OC. With 1% confidence, you can say that the population standard deviation is O D. With 99% confidence, you can say that the population standard.deviation is less than minutes. between minutes and minutes. Click to select your answer(s).
The waiting times (in minutes) of a random sample of 20 people at a bank have a sample standard deviation of 4.4 minutes. Construct a confidence interval for the population variance of and the population standard deviation o. Use a 99% level of confidence. Assume the sample is from a normally distributed population. What is the confidence interval for the population variance o2? ( D (Round to one decimal place as needed.) nterpret 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 99% confidence, you can say that the population variance is greater O B. With 1% confidence, you can say that the population variance is less than than OC. With 99% confidence, you can say that the population variance is O D. With 1% confidence, you can say that the population variance is between between and and What ishe conidence interval for the population standard deviation o? ( DRound to one decimal place as needed.) Interprel 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.) O A. With 99% confidence, you can say that the population standard deviation O B. With 1% confidence, you can say that the population standard deviation is greater than minutes is between and minutes. OC. With 1% confidence, you can say that the population standard deviation is O D. With 99% confidence, you can say that the population standard.deviation is less than minutes. between minutes and minutes. Click to select your answer(s).
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 20 people at a bank have a sample standard deviation of 4.4 minutes. Construct a confidence interval for the
population variance of and the population standard deviation o. Use a 99% level of confidence. Assume the sample is from a normally distributed population.
What is the confidence interval for the population variance o2?
( D (Round to one decimal place as needed.)
nterpret 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 99% confidence, you can say that the population variance is greater O B. With 1% confidence, you can say that the population variance is less than
than
OC. With 99% confidence, you can say that the population variance is
O D. With 1% confidence, you can say that the population variance is between
between
and
and
What ishe conidence interval for the population standard deviation o?
( DRound to one decimal place as needed.)
Interprel 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.)
O A. With 99% confidence, you can say that the population standard deviation O B. With 1% confidence, you can say that the population standard deviation is
greater than
minutes
is between
and
minutes.
OC. With 1% confidence, you can say that the population standard deviation is O D. With 99% confidence, you can say that the population standard.deviation
is less than
minutes.
between
minutes and
minutes.
Click to select your answer(s).
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