This test: 20 poin This question: 1 Here are summary statistics for randomly selected weights of newborn girls: n = 36, x = 3216.7 g, s =688.5 g. Use a confidence level of 95% to complete parts (a) through (d) below. a. Identify the critical value to/2 used for finding the margin of error (Round to two decimal places as needed.) b. Find the margin of error. E = (Round to one decimal place as needed.) c. Find the confidence interval estimate of u g