Please show all steps

Question 1 (solve it with pen and paper): 15 points Use the following information to construct the confidence intervals specified to estimate u. a. 98% confidence for x = 124.6, o= 21.89, and n = 75 b. 90% confidence for x = 3.419, s = 1.037, and n = 29 c. 80% confidence for x = 52.7, o = 13.1, N= 500, and n = 48