Here are summary statistics for randomly selected weights of newborn girls: n= 36, x = 3197.2 g, s = 692.6 g. Use a confidence level of 99% to complete parts (a) through (d) below. a. Identify the critical value tal 2 used for finding the margin of error. tal2 = 2.73 (Round to two decimal places as needed.) b. Find the margin of error. E= 314.4 g (Round to one decimal place as needed.) c. Find the confidence interval estimate of u. 2882.8 g