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CiciZ · 2022年11月24日

为什么A是错的

  1. CFA I
  2. Quantitative

NO.PZ2021062201000016

问题如下：

Which of the following statements is correct with respect to the null hypothesis?

选项：

A.

It can be stated as “not equal to” provided the alternative hypothesis is stated as “equal to.”

B.

Along with the alternative hypothesis, it considers all possible values of the population parameter.

C.

In a two-tailed test, it is rejected when evidence supports equality between the hypothesized value and the population parameter.

解释：

B is correct. The null hypothesis and the alternative hypothesis are complements of one another and together are exhaustive; that is, the null and alternative hypotheses combined consider all the possible values of the population parameter

原假设和备择假设互为补充，并且是全覆盖的； 也就是说，原假设和备择假设相结合考虑了总体参数的所有可能值。

A选项为什么是错的？

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1 个答案

星星_品职助教 · 2022年11月25日

同学你好，

当检验涉及到是否等于一个确定性的数字时，原假设永远都是放等于这个数字（stated as “equal to.”），备择假设放不等于的情况（ stated as “not equal to”）。A选项的描述说反了。

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