need question that are circled answered 23,25,27and 29. please help

tervals In Exercises 23-26, construct the indicated confidence interval for the population mean L. 23, c = 0.90, x = 15.2, s = 2.0, n = 60 24. c = 0.95, x = 31.39, s = 0.8, n = 82 25) c = 0.95, x = 4.27, s = 0.3, n = 42 26. c = 0.99, x = 13.5, s = 1.5, n = 100 In Exercises 27-30, find the minimum sample size n needed to estimate u for the given values of c, s, and E. 27, c = 0.90, s = 6.8, E = 1 28. c = 0.95, s = 2.5, E = 1 29 c = 0.80, s = 4.1, E = 2 30. c = 0.98, s = 10.1, E = 2 ntornrating Concepts