(6.4).5

The diameters (in inches) of

17

randomly selected bolts produced by a machine are listed. Use a

95%

level of confidence to construct a confidence interval for (a) the population variance

2

and (b) the population standard deviation

.

Interpret the results.

4.484	4.422	4.006	4.337	4.006	3.778
3.828	3.738	4.222	3.979	4.152	4.565
3.936	3.744	3.883	3.828	4.464

Question content area bottom

Part 1

(a) The confidence interval for the population variance is

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