The Harvard College Alcohol Study finds that 67 of college s

The Harvard College Alcohol Study finds that 67% of college students support efforts to \"crack down on underage drinking.\" The study took a sample of almost 15,000 students, so the population proportion who support a crackdown is very close to p = 0.67.

Solution

Sample proportion = 147/210=0.70

b) P(X>0.67) = P(Z>0.03/0.03244) = P(Z>0.925)

= 0.5-0.3238

= 0.1762