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ninalin · 2018年07月06日

问一道题:NO.PZ2017092702000140 [ CFA I ]

问题如下图:

    

选项:

A.

B.

C.

解释:


老师,请问C选项怎么理解?

1 个答案

源_品职助教 · 2018年07月06日

因为表格中提供的关键值的绝对值小于关键值的绝对值。那么在这种情况下我们就不能拒绝原假设。

原假设是假设了两个总体均值差异为0,所以C选项说法不对,C说的是两者均值的差异显著性不等于0,其实是等于0.

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