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Danielle靓靓 · 2018年11月05日

问一道题:NO.PZ2018062016000120

问题如下图:

    

选项:

A.

B.

C.

老师,A项不是P value的概念么?不是应该越小越拒绝原假设么?有点晕了,请老师指教,谢谢

解释:



1 个答案

菲菲_品职助教 · 2018年11月05日

同学你好,A选项跟P值没有任何关系。

A选项说的是,当t统计量的绝对值大于临界值时,我们拒绝原假设,这是正确的。

P值用来判断是否拒绝原假设是和α进行比较,P-value<α,我们拒绝原假设。

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