Question: 8.28 Sample size needed for an evaluation. You are planning an evaluation of a semester-long alcohol awareness campaign at your college. Previous evaluations indicate that

8.28 Sample size needed for an evaluation. You are planning an evaluation of a semester-long alcohol awareness campaign at your college. Previous evaluations indicate that about 25% of the students surveyed will respond Yes to the question “Did the campaign alter your behavior toward alcohol consumption?” How large a sample of students should you take if you want the margin of error for 95%

confidence to be about 0.06?

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