Please explain using excel (a-c)

please explain using excel

HW Score: 87.57 of 8 points O Points: 0 of 1 Save Tomework: Chapter 6 (additional Question 8.8.3.22 problems) Putos Determine the margin of morran os confidence intervalom the population where a 15 b n-35 c) 53 al The margin oferter for an 80% code interval when n15 found to two decimal places need Help me solve this View an example Clear allt Checa = III problems) apter 6 (additional Question 8, *8.3.22 Part 1 of 3 Determine the margin of error for an 80% confidence interval to estimate the population mean when s = 38 for the sample sizes below. a) n=15 b) n=35 c) n=53 a) The margin of error for an 80% confidence interval when n = 15 is (Round to two decimal places as needed.)