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Feeling · 2019年05月22日

问一道题:NO.PZ201512020300000303 第3小题

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问题如下图:

    

选项:


A.

B.

C.

解释:


原假设是Bj≥0,5%的显著性水平,那么接受域应该是大于1.96的部分吧?

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已采纳答案

源_品职助教 · 2019年05月23日

拒绝域是和备择假设同方向,这是单尾检验,所以拒绝域是小于-1.65的区域,那么接受域就是大于-1.65的范围。

 

源_品职助教 · 2019年05月23日

5%的显著性水平,Z分布表单尾对应1.65,双尾是1.96

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