(6.4).4b

Use technology to construct the confidence intervals for the population variance

2

and the population standard deviation

.

Assume the sample is taken from a normally distributed population.

c=0.98,

s2=20.25,

n=26

Question content area bottom

Part 1

The confidence interval for the population variance is

(11.4211.42,43.9343.93).

(Round to two decimal places as needed.)

Part 2

The confidence interval for the population standard deviation is

(enter your response here,enter your response here).

(Round to two decimal places as needed.)