Homework 09: Problem 4 Previous Problem Problem List Next Problem (1 point) A random sample of 11 measurements was selected from a population with unknown mean u and standard deviation 0'. Calculate a 95% confidence interval for [4 for each of the following situations: (a) n: 12, E:87.1, s=3.51 SS (b) n =11, E = 103.1, s = 3.67 SS (c) n: 21, E:26.1, 3 =3.38 Sits (d) n =12, E: 27.1, s = 3.13 SS Homework 09: Problem 5 Previous Problem Problem List Next Problem (1 point) A sample of size 16 was taken from a very large population. Sample statistics, Y and s, were used to find that the 80% confidence interval was (147.6475, 154.3525). >