# SOLUTION: A random sample of 600 high school girls showed that during the previous month 42 took diet pills to lose weight. The researcher wants to test the hypothesis that less than 10% of

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 Click here to see ALL problems on Probability-and-statistics Question 329058: A random sample of 600 high school girls showed that during the previous month 42 took diet pills to lose weight. The researcher wants to test the hypothesis that less than 10% of high school girls take diet pills to lose weight. The test statistic isAnswer by stanbon(57424)   (Show Source): You can put this solution on YOUR website!A random sample of 600 high school girls showed that during the previous month 42 took diet pills to lose weight. The researcher wants to test the hypothesis that less than 10% of high school girls take diet pills to lose weight. The test statistic is: z(42/600) = (0.07-0.10)/sqrt{0.1*0.9/600] = -2.4495 ===================== Cheers, Stan H. =============