jedusor: (wtf)
jedusor ([personal profile] jedusor) wrote2008-10-09 02:47 pm
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Statistics question

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.
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