Here are summary statistics for randomly selected weights of newborn girls: n - 36, x = 3211.1 g, s = 689.4 g. Use a confidence level of 95% to complete parts (a) through (d) below. a. Identify the critical value tarp used for finding the margin of error. a/2 = 2.03 (Round to two decimal places as needed.) b. Find the margin of error. E- 9 (Round to one decimal place as needed.)