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Madison · 2023年10月01日

Distribution Curve for Hypothesis Testing

 03:36 (1.3X) 

What is the variable of the distibution curve here for hypothesis testing? The individual height of every person in China or the sample means of every possible sample extracted from the population? Since we are using sample standard diviation


to compute the distance from the population mean, does this mean this is a distribution of all possible sample means? Thank you.


1 个答案

星星_品职助教 · 2023年10月01日

同学你好,

每个人的身高都是确定的常数,在估计所有人的平均身高时,所选择的样本的均值(即样本均值) 是随机变量。

对于均值进行检验时,检验统计量通常服从z分布或t分布。

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