SOLUTION: 9) 100 women were polled and 60 reported successfully communicating an automobile problem to an auto repairman. A sample of 150 men had 95 reporting the same success. The value of

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Question 265992: 9) 100 women were polled and 60 reported successfully communicating an automobile problem to an auto repairman. A sample of 150 men had 95 reporting the same success. The value of the test statistic for a test of the equality of proportions is
A.

-0.5319.
B.

-0.419.
C.

0.2702.
D.

0.7293.

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
100 women were polled and 60 reported successfully communicating an automobile problem to an auto repairman. A sample of 150 men had 95 reporting the same success. The value of the test statistic for a test of the equality of proportions is
z(0.6-95/150) = -0.03333/sqrt((0.6*.4)/100 + (0.6333*0.3667/150)) = -0.5319
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Ans: A
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Cheers,
Stan H.
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A.
-0.5319.
B.
-0.419.
C.
0.2702.
D.
0.7293.