Suppose that in Exercise 9-126, the experimenter had believed that   14.

For each of the following sample sizes, and a fixed   0.05, find the probability of a type II error if the true mean is 205 milliliters per hour.

(a) n  20

(b) n  50

(c) n  100

(d) Comparing your answers to those in Exercise 9-126, does the probability of a type II error increase or decrease with the increase in standard deviation? Explain your answer.