Section 23.1

Exercise Set A: 1, 2, 3, 4, 5, 9

Section 23.2

Exercise Set B: 1, 4, 5, 6, 7, 8

Section 23.3

Exercise Set C: 1, 2, 5, 6

Section 23.4

Exercise Set D: 1, 2, 4, 5, 6, 7

Also:

Suppose the the mean height of a random sample of 200 male adults was found to be $\bar{x} = 69.4$ inches with a sample standard deviation of $\mathrm{SD} = 4.56$ inches. Find (a) 95%, (b) 90%, ( c) 80%, and (d) 99% confidence intervals for the true average height of adult males in the population.

Answers:

(a) (68.8, 70.0) (b) (68.9, 69.9) (c) (69.0, 69.8) (d) (68.6, 70.2)