More errors For each of the following situations, state whether a Type I, a Type II, or neither error has been made.

a) A test of H0: m = 25 vs. HA: m 7 25 rejects the null hypothesis. Later it is discovered that m = 24.9.

b) A test of H0: p = 0.8 vs. HA: p 6 0.8 fails to reject the null hypothesis. Later it is discovered that p = 0.9.

c) A test of H0: p = 0.5 vs. HA: p • 0.5 rejects the null hypothesis. Later it is discovered that p = 0.65.

d) A test of H0: p = 0.7 vs. HA: p 6 0.7 fails to reject the null hypothesis. Later it is discovered that p = 0.6.

CHAPTER EXERCISES