Here are summary statistics for randomly selected weights of newborn girls: n = 36, x=3180.6 g, s = 700.5 g. Use a confidence level of 99% to complete parts (a) through (d) below. a. Identify the critical value ta/2 used for finding the margin of error. ta/2= (Round to two decimal places as needed.) b. Find the margin of error. E= 9 (Round to one decimal place as needed.) c. Find the confidence interval estimate of . g