Question 2 of 4 (1 point) Attempt 1 of 1 View question in a popup 1h 28m Remaining 8.1 Sectio A sample of size n = 60 is drawn from a population whose standard deviation is o = 40. Part 1 of 2 (a) Find the margin of error for a 90% confidence interval for u. Round the answer to at least three decimal places. The margin of error for a 90% confidence interval for u is Part 2 of 2 (b) If the confidence level were 99%, would the margin of error be larger or smaller? (Choose one) because the confidence level is (Choose one)