Statistics question
Oct. 9th, 2008 02:47 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png)
Can anyone explain to me why the t-statistic approaches the z-score as n approaches infinity, rather than as n approaches N? Is it just assumed that an unknown population size is infinite? I asked the teacher, and she didn't know. It's not important to actual calculations, of course, because there's obviously no way for n to be greater than N; I'm just curious.