b. E = 4.1, 6 = 23.45, confidence level = 95% c. E = 25.9, o = 122.25, confidence level = 90% 8.18 Determine the sample size for the estimate of u for the following. a. E = .17, 6 = .90, confidence level = 99% b. E = 1.45, 6 = 5.82, confidence level = 95% c. E = 5.65, 6 = 18.20, confidence level = 90% APPLICATIONS