tig The waiting times (in minutes) of a random sample of 22 people at a bank have a sample standard deviation of 4.3 minutes. Construct a confidence interval for the population variance o and the...

Extracted text: tig The waiting times (in minutes) of a random sample of 22 people at a bank have a sample standard deviation of 4.3 minutes. Construct a confidence interval for the population variance o and the population standard deviation o. Use a 90% level of confidence. Assume the sample is from a normally distributed population. What is the confidence interval for the population variance o ? OD (Round to one decimal place as needed.)