NO.PZ2015120604000131
问题如下:
Which of the following descriptions is the least accurate about hypothesis testing?
选项:
A.
A Type II error refers to fail to reject when the null is false.
B.
A one-tailed test with a significance level of 1% has z-critical values of 2.58.
C.
One minus the probability of a Type II error equals the power of test .
解释:
B is correct.
A one-tailed test with a significance level of 1% has z-critical values of 2.33
老师,我是用排除法选的B,看了其他同学的问题和您的回复,99% a是0.01对应双尾是2.58,那单尾就是0.005?这怎么查出来的呢