SOLUTION: A hypothesis test is to be performed for a population proportion. For the given sample data and null hypothesis, compute the value of the test statistic. A drug company clai

Question 1116066:
A hypothesis test is to be performed for a population proportion. For the given sample data and null hypothesis, compute the value of the test statistic.
A drug company claims that over 90% of all physicians recommend their drug. 800 physicians were asked if they recommend the drug to their patients. 39% said yes. H0: p = 0.9.
a.-96.17
b.-48.08
c. -62.51
d. -43.27

Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
test stat is (phat-p)/sqrt(p*(1-p)/n)
z=(-0.51)/0.0106
=-48.08
B
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