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Narcissus · 2018年11月24日

问一道题：NO.PZ2015120604000131 [ CFA I ]

  1. CFA I
  2. Quantitative

请问选项B如果换成是双尾检验就是正确的了对吗？

问题如下图：

选项：

A.

B.

C.

解释：

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1 个答案

菲菲_品职助教 · 2018年11月24日

同学你好，你说的是正确的。

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