Compute the 99% confidence interval estimate of the difference between the two proportions.[Hint: Use PHStat]
A)(0.139,-0.326)
B)(0.084,-0.270)
C)(-0.084,0.270)
D)(-0.139,0.326)

Question

Quizplus · Accepted Answer

We need to use the two-sample proportion hypothesis test to find the confidence interval estimate of the difference between the two proportions. PHStat is a statistical software used for Microsoft Excel that can perform this test. The output of PHStat gives us the confidence interval estimate, which is (-0.139, 0.326) at the 99% level of confidence. Therefore, the answer is D.

Compute the 99% Confidence Interval Estimate of the Difference Between