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The waiting times (in minutes) of a random sample of 22 people at a bank have a sample standard deviation of 3.9 minutes. Construct a confidence interval for the population variance o2 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? . ) (Round to one decimal place as needed.)

The waiting times (in minutes) of a random sample of 22 people at a bank have a sample standard deviation of 3.9 minutes. Construct a confidence interval for the population variance o2 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? . ) (Round to one decimal place as needed.)

MATLAB: An Introduction with Applications
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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Construct a confidence interval for the A) population variance and the b) population standard deviation
**Problem Statement:** The waiting times (in minutes) of a random sample of 22 people at a bank have a sample standard deviation of 3.9 minutes. Construct a confidence interval for the population variance \( \sigma^2 \) and the population standard deviation \( \sigma \). Use a 99% level of confidence. Assume the sample is from a normally distributed population. **Question:** What is the confidence interval for the population variance \( \sigma^2 \)? \[ (\ \ \ ,\ \ \ ) \] (Round to one decimal place as needed.)
Transcribed Image Text:**Problem Statement:** The waiting times (in minutes) of a random sample of 22 people at a bank have a sample standard deviation of 3.9 minutes. Construct a confidence interval for the population variance \( \sigma^2 \) and the population standard deviation \( \sigma \). Use a 99% level of confidence. Assume the sample is from a normally distributed population. **Question:** What is the confidence interval for the population variance \( \sigma^2 \)? \[ (\ \ \ ,\ \ \ ) \] (Round to one decimal place as needed.)
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