(6.4).8

The waiting times (in minutes) of a random sample of

20

people at a bank have a sample standard deviation of

4.6

minutes. Construct a confidence interval for the population variance

2

and the population standard deviation

.

Use a

95%

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

2?

(enter your response here,enter your response here)

(Round to one decimal place as needed.