老师，A选项为什么错误呀

NO.PZ2018062016000133

问题如下：

Which of the following descriptions on the p-value is most accurate?

选项：

It is a stable value in all hypothesis testings.

It's the probability of obtaining a test statistic which leads to a rejection of the alternative hypothesis.

It is the smallest significant level for which the hypothesis would be rejected.

解释：

C is correct. The p-value is the probability of obtaining a test statistic that would lead to a rejection of the null hypothsis, and it's the smallest significance level for which the hypothesis would be rejected.

？？？。。。。。。。。

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1 个答案

品职助教_七七 · 2025年06月04日

嗨，努力学习的PZer你好：

A选项偷换了概念。stable的应该是significance level。这个值会被固定的设置为1%或5%或10%。

但p-value并不固定，它的大小和test statistic有关，多大都有可能。

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