标题: 求解， hypothesis test [打印本页] 作者: gacfng 时间: 2009-2-2 08:59 标题: 求解， hypothesis test
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
