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Having conducted a rather extensive study aimed at determining whether sleep deprivation affects grades in a

sample of college students, you publically conclude that, "based on an analysis of our data, sleep deprivation has no effect on grades in college students." But.........this conclusion is truly in error. In fact, sleep deprivation has an effect on college students' grades. The fact that the researcher made this erroneous conclusion is an example of:

Group of answer choices

A. a power error

B. a population error

C. a beta error

D. an alpha error

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