Using the .05 criterion of significance, the probability of a Type I error is .05. Using the

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“Using the .05 criterion of significance, the probability of a Type I error is .05. Using the .001 criterion of significance, the probability of a Type I error is .001 (much smaller). Therefore, researchers should always use the .001 criterion of significance.” Use the concept of statistical power to explain why the last sentence in the quotation is not a good idea.

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Introductory Statistics For The Behavioral Sciences

ISBN: 9780470907764

7th Edition

Authors: Joan Welkowitz, Barry H. Cohen, R. Brooke Lea

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