SOLUTION: A researcher has boiled her hypothesis test down to the following information: H0: p= 0.7, Ha: p< 0.7, α= 0.08 x= 115, n= 169 ***Note: The "0" in H0 and the "a" in Ha a

Algebra ->  Probability-and-statistics -> SOLUTION: A researcher has boiled her hypothesis test down to the following information: H0: p= 0.7, Ha: p< 0.7, α= 0.08 x= 115, n= 169 ***Note: The "0" in H0 and the "a" in Ha a      Log On


   

Question 1133559: A researcher has boiled her hypothesis test down to the following information:
H0: p= 0.7, Ha: p< 0.7, α= 0.08
x= 115, n= 169

***Note: The "0" in H0 and the "a" in Ha are supposed to be sub scripted***
1. Find the p-value.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
z=(phat-p)/sqrt(p*(1-p)/n)
p hat is 115/169=0.68
sqrt(0.68*0.32/169)=0.0359
phat-p=0.02
z=-0.02/0.0359=-0.56
p-value is z<=-0.56 or 0.2877 or 0.29