求解， hypothesis test standard, normal, selected, hypothesis

gacfng

问第二问，谢谢啦
A normal population has a population standard deviation of 12. The
hypotheses about the population mean, H0: μ = 40 versus H1: μ > 40 are to be tested. A
random sample of 100 observations will be selected and the sample mean is denoted by x .
24. Suppose the p-value is 0.015, the value of x must be closest to
A. 40.9
B. 41.5
C. 42.6
D. 43.2
E. 44.2
25. If the true population mean is 43 and the hypotheses are tested at the 5% significance
level, the probability of a Type II error is closest to
A. 0.305
B. 0.273
C. 0.229
D. 0.195
E. 0.187


ask for the second question.