题目
Gloria Brown, FRM, calculated the intrinsic value of RTN Company and expects the stock to generate a 25% annual return over the foreseeable future. However, Brown is concerned that her price forecast may be too high. She conducted a hypothesis test and concluded that at a 5% significance level, the null hypothesis can be rejected that RTN Company's investment return would be equal to or less than 25% per year. The one-tailed test utilized a z-test. Indicate the meaning of the significance level chosen by Brown and state the correct rejection region. Significance Level Rejection Region
选项
A.Brown will reject a true null hypothesis 5% of the time\uff1bZ>1.645
B.Brown will reject a false null hypothesis 95% of the time\uff1bZ<-1.645
C.Brown will reject a true null hypothesis 5% of the time\uff1bZ<-1.645
D.Brown will reject a false null hypothesis 95% of the time\uff1bZ>1.645
答案
A
解析
The level of significance is the probability of rejecting the null hypothesis when it is true. The null hypothesis will be rejected if the z-statistic is great than 1.645. 显着性水平是在拒绝原假设为真时的可能性。 如果z统计量大于1.645，则原假设将被拒绝。