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小陈要努力 · 2022年05月19日

b选项提问一下

NO.PZ2018062016000119

问题如下:

which of the following statement is most likely correct?

选项:

A.

95% confidence level is that means we have 95% probably reject H0

B.

Test statistic is calculated with the population data

C.

Critical value is determined by the significantly level

解释:

C is correct. 95% confidence level is that means we have 95% probably not reject H0,test statistic is calculated with the sample data.

检验统计量计算的公式,公式中分子不是用样本均值减去整体均值嘛,那是不是有用到整体的参数么

1 个答案

星星_品职助教 · 2022年05月20日

同学你好,

总体参数是未知的,所以才会有检验。在检验中,要做 总体参数是多少 的原假设。

而检验统计量的公式里,代入的就是这个假设的总体参数。并没有用到实际的总体参数。

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