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Assume the university is interested in the question of whether the instructor impacts student learning. Professor A has a class of 28 students having an
Assume the university is interested in the question of whether the instructor impacts student learning. Professor A has a class of 28 students having an average grade of 84 and standard deviation of 6. Professor B has a class of 31 students having an average grade of 77 with the standard deviation of 8. Conduct a pooled-variance test using a 0.05 level of significance to determine whether Professor A is better than Professor B.
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