2. A graduate student wishes to compare the high school grade-point averages (GPAs) of males and females.

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2. A graduate student wishes to compare the high school grade-point averages (GPAs) of males and females. He identifies 50 brother/sister pairs, obtains the GPA for each individual, and proceeds to test H0: μmales −μfemales 0. Are the methods discussed in this chapter appropriate for such a test? (Explain.)

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