A sample of size n 56 is drawn from a population whose standard deviation is a 17. Part 1 of 2 (a) Find the margin of error for a 95% confidence interval for . Round the answer to at least three decimal places. The margin of error for a 95% confidence interval for is . Part 2 of 2 (b) If the sample size were n=53, would the margin of error be larger or smaller? (Choose one) , because the sample size is (Choose one)