When testing for a difference between the means of a treatment group and a group given a

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When testing for a difference between the means of a treatment group and a group given a placebo, the following Excel display is obtained. Using a 0.05 significance level, is there sufficient evidence to support the claim that the treatment group (Variable 1) comes from a population with a mean that is less than the mean for the placebo population? Explain.
When testing for a difference between the means of a
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Elementary Statistics

ISBN: 9780321225979

3rd Canadian Edition

Authors: Mario F. Triola

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