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

Algebra ->  Algebra  -> Probability-and-statistics -> 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       Log On

Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!
Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

   

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 is
Answer by stanbon(57424) About Me  (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.
=============