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Lay You Lum · 2020年07月14日

pooled estimator在什么情况下应用呢?

pooled estimator在什么情况下应用呢?

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星星_品职助教 · 2020年07月14日

同学你好,

关于pooled estimator ,原版书有一道题,这道题目选择B。掌握这个即可,这是特定假设检验下应用的特定概念,不是很重要。

A pooled estimator is used when testing a hypothesis concerning the:
A equality of the variances of two normally distributed populations.
B difference between the means of two at least approximately normally distributed populations with unknown but assumed equal variances.
C difference between the means of two at least approximately normally distributed populations with unknown and assumed unequal variances
 

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