The waiting times (in minutes) of a random sample of 21 people at a bank have a sample standard deviation of 4.6 minutes. Construct a confidence interval for the population variance o? and the...

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Extracted text: The waiting times (in minutes) of a random sample of 21 people at a bank have a sample standard deviation of 4.6 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. 2.4,5.3) (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.) O A. With 90% confidence, you can say that the population variance is between O B. With 10% confidence, you can say that the population variance is between and and C. With 90% confidence, you can say that the population variance is greater O D. With 10% confidence, you can say that the population variance is less than than 21 What is the confidence interval for the population standard deviation o? 1.5, 2.6) (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.) O A. With 90% confidence, you can say that the population standard deviation is between and B. With 90% confidence, you can say that the population standard deviation is less than 4.6 minutes. minutes. O C. With 10% confidence, you can say that the population standard deviation is between O D. With 10% confidence, you can say that the population standard deviation is greater than minutes and minutes. minutes.