In the Consolidated Power hypothesis test of H0: < 60 versus Ha: > 60 (as

Question:

In the Consolidated Power hypothesis test of H0: μ < 60 versus Ha: μ > 60 (as discussed in Exercise 9.47) find the sample size needed to make the probability of a Type I error equal to .025 and the probability of a Type II error corresponding to the alternative value μa = 60.5 equal to .025. Here, assume σ equals 2.