The waiting times (in minutes) of a random sample of 2020 people at a bank have a sample standard deviation of 3.33.3 minutes. Construct a confidence interval for the population variance sigma squaredσ2 and the population standard deviation sigmaσ. Use a 90 %90% level of confidence. Assume the sample is from a normally distributed population. Question content area bottom Part 1 What is the confidence interval for the population variance sigma squaredσ2? (enter your response here,enter your response here) (Round to one decimal place as needed.) Part 2 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. With 90 %90% confidence, you can say that the population variance is lessless than enter your response here. B. With 90 %90% confidence, you can say that the population variance is between enter your response here and enter your response here. C. With 1010% confidence, you can say that the population variance is greatergreater than enter your response here. D. With 1010% confidence, you can say that the population variance is between enter your response here and enter your response here. Part 3 What is the confidence interval for the population standard deviation sigmaσ? (enter your response here,enter your response here) (Round to one decimal place as needed.) Part 4 Interpret the results. Select the correct choice below and fill in the answer box(es)
The waiting times (in minutes) of a random sample of 2020 people at a bank have a sample standard deviation of 3.33.3 minutes. Construct a confidence interval for the population variance sigma squaredσ2 and the population standard deviation sigmaσ. Use a 90 %90% level of confidence. Assume the sample is from a normally distributed population. Question content area bottom Part 1 What is the confidence interval for the population variance sigma squaredσ2? (enter your response here,enter your response here) (Round to one decimal place as needed.) Part 2 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. With 90 %90% confidence, you can say that the population variance is lessless than enter your response here. B. With 90 %90% confidence, you can say that the population variance is between enter your response here and enter your response here. C. With 1010% confidence, you can say that the population variance is greatergreater than enter your response here. D. With 1010% confidence, you can say that the population variance is between enter your response here and enter your response here. Part 3 What is the confidence interval for the population standard deviation sigmaσ? (enter your response here,enter your response here) (Round to one decimal place as needed.) Part 4 Interpret the results. Select the correct choice below and fill in the answer box(es)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
The waiting times (in minutes) of a random sample of
2020
people at a bank have a sample standard deviation of
3.33.3
minutes. Construct a confidence interval for the population variance
sigma squaredσ2
and the population standard deviation
sigmaσ.
Use a
90 %90%
level of confidence. Assume the sample is from a normally distributed population.Question content area bottom
Part 1
What is the confidence interval for the population variance
sigma squaredσ2?
(enter your response here,enter your response here)
(Round to one decimal place as needed.)Part 2
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.)
With
90 %90%
confidence, you can say that the population variance is
lessless
than
enter your response here.
With
90 %90%
confidence, you can say that the population variance is between
enter your response here
and
enter your response here.
With
1010%
confidence, you can say that the population variance is
greatergreater
than
enter your response here.
With
1010%
confidence, you can say that the population variance is between
enter your response here
and
enter your response here.
Part 3
What is the confidence interval for the population standard deviation
sigmaσ?
(enter your response here,enter your response here)
(Round to one decimal place as needed.)Part 4
Interpret the results. Select the correct choice below and fill in the answer box(es)
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