问题如下:
A hypothesis test for a normally-distributed population at a 0.05 significance level implies a:
选项:
A. 95% probability of rejecting a true null hypothesis.
B. 95% probability of a Type I error for a two-tailed test.
C. 5% critical value rejection region in a tail of the distribution for a one-tailed test.
解释:
C is correct.
For a one-tailed hypothesis test, there is a 5% critical value rejection region in one tail of the distribution.
请问,confidence lnterval不是就代表是双尾吗?为什么c还是对的呢?