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syzsg004 · 2022年08月23日

单尾不是＜critical value接受原假设吗

  1. CFA I
  2. Quantitative

NO.PZ2018062016000123

问题如下：

Which of the following statements about one-side hypothesis test is most correct ?

选项：

A.

We reject the null only if the evidence indicates that the population parameter is smaller or larger than the critical value.

B.

Do not have Type I error.

C.

We reject the null only if the evidence indicates that the test statistic is greater than or less than the critical value.

解释：

C is correct. By definition, one-side hypothesis test also called one-tailed hypothesis test, which reject rule is reject the null only if the evidence indicates that the test statistic is greater than or less than the critical value.

选项C也没说绝对值啊

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1 个答案

星星_品职助教 · 2022年08月23日

同学你好，

C选项的“ greater than or less than”描述对应的就是绝对值的情况。如果是正数的情况，就对应greater than；负数则为less than

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