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Unformatted text preview: 5.2 Distribution of sample mean : 5.3 Central limit theorem: Even if the population is not normal, sample means from the population will be approximately normal as long as the sample size is large enough (n>30) 5.4 Distribution of difference between two sample means: For two samples, we call large samples only when both sample sizes >30 ....
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 Fall '08
 WanXuhu

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