A sample of size n = 50 is drawn from a population whose standard deviation is o = 47. Part 1 of 2 (a) Find the margin of error for a 95% confidence interval for u. Round the answer to at least three decimal places. The margin of error for a 95% confidence interval for u is Part 2 of 2 (b) If the sample size were n = 80, would the margin of error be larger or smaller? (Choose one) V , because the sample size is (Choose one)