Here are summary statistics for randomly selected weights of newborn girls: nequals=3636, x overbarxequals=3180.63180.6 g, sequals=700.5700.5 g. Use a confidence level of 9090% to complete parts (a) through (d) below. Question content area bottom Part 1 a. Identify the critical value t Subscript alpha divided by 2t/2 used for finding the margin of error. t Subscript alpha divided by 2t/2equals=1.691.69 (Round to two decimal places as needed.) Part 2 b. Find the margin of error. Eequals=enter your response here g