Mortgage rates: Following are interest rates (annual percentage rates) for a 30-year fixed rate mortgage from a sample of lenders in Macon, Georgia, on June 20, 2013. Assume that the population is approximately normal. 4.822 4.129 4.351 4.54 4.919 4.976 4.658 3.438 4.543 4.774 4.213 4.266 Part: 0/3 Part 1 of 3 (a) Find the sample standard deviation S. Round the answer to at least four decimal places. The sample standard deviation S is 0.4288 Part: 1/3 Part 2 of 3 5 (b) Construct a 90% confidence interval for the population standard deviation . Round the answers to at least two decimal places. A 90% confidence interval for the population standard deviation is < < Activate Windows Go to Settings to activate Wind Next Part Submit Assignment