Math-K300 Spring 2022 Online Kierstyn Cochran 03/26/22 12:17 PM ? S Homework: Section 6.4 Confidence Intervals for Question 8, 6.4.13-T HW Score: 36.36%, 8 of 22 points Variance and Part 1 of 4 O Points: 0 of 1 Save The diameters (in inches) of 17 randomly selected bolts produced by a machine are listed. Use a 90% level of confidence to construct a confidence interval for (a) the population variance of and (b) the population standard deviation a. Interpret the results. 4.478 4.429 4.021 4.319 4.002 3.766 3.815 3.768 4.236 3.973 4.154 4.573 3.976 3.741 3.887 3.835 4.426 (a) The confidence interval for the population variance is () (Round to three decimal places as needed.)