NO.PZ2017092702000127
问题如下：
A Type II error is best described as:
选项：
A.rejecting a true null hypothesis.
B.failing to reject a false null hypothesis.
C.failing to reject a false alternative hypothesis
解释：
B is correct.
A Type II error occurs when a false null hypothesis is not rejected.
类型II错误的定义是：存伪。
B和C有什么区别？
