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Arthas · 2023年07月24日

不太明白

NO.PZ2018062016000120

问题如下:

which of the following statement is most likely correct?

选项:

A.

Reject the null hypothesis if the

B.

Accept the null hypothesis if the

C.

Reject the null hypothesis if the

解释:

A is correct, according to the decision rule, reject the null hypothesis if the |test statistic| >|critical value|, and we can only say cannot reject the null hypothesis.

如果test statistic>critical value,不是会落在接受域里面吗,应该是大于右尾critical value或小于左尾critical value才落在拒绝域里面吧?

1 个答案

星星_品职助教 · 2023年07月25日

同学你好,

关系是 |test statistic| >|critical value|时拒绝,不是test statistic>critical value时拒绝。

用绝对值表示关系不需要考虑两者的符号,无论test statistic和critical value是哪种符号,套上绝对值后,就都是你说的“大于右尾critical value或小于左尾critical value落在拒绝域里面”。

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