问题
单项选择题
Which of the following statements about hypothesis testing is TRUE A Type Ⅱ error is the probability of:（）
A. rejecting a true null hypothesis.
B. rejecting a true alternative hypothesis.
C. failing to reject a false null hypothesis.
答案
参考答案：C
解析：
The Type Ⅱ error is the error of failing to reject a null hypothesis that is not true.