Question: Assume that two samples have the same standard deviation and that both are independent, small, and randomly selected from normally distributed populations. Also assume that

Assume that two samples have the same standard deviation and that both are independent, small, and randomly selected from normally distributed populations. Also assume that we want to test the claim that the samples come from populations with the same mean.
a. Is it necessary to conduct a preliminary F test?
b. If both samples have standard deviation s, what is the value of s f) expressed in terms of s?

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a Not really If s 1 s 2 then F s 2 1 s 2 2 10000 Since all upper tail ... View full answer

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