Suppose that a researcher is interested in the effect of new smart drug on IQ. Scores from

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Suppose that a researcher is interested in the effect of new smart drug on IQ. Scores from the IQ test are normally distributed with a mean of μ = 100 and σ = 15.

A participant receives the smart drug and completes the IQ assessment.

a. If the treatment has no effect on IQ, what is the probability that X > 145?

b. If the treatment has no effect on IQ, what is the probability that X > 110?

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Essentials Of Statistics For The Behavioral Sciences

ISBN: 9780357365298

10th Edition

Authors: Frederick J Gravetter, Larry B. Wallnau, Lori Ann B. Forzano, James E. Witnauer

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