A sample of size 100 selected from one population has 60 successes,and a sample of size 150 selected from a second population has 95 successes.The test statistic for testing the equality of the population proportions equal to:
A) -0.5319.
B) 0.7293.
C) -0.419.
D) 0.2702.

Question

Quizplus · Accepted Answer

The test statistic for testing the equality of two population proportions is calculated using the formula for the difference between two proportions. The formula involves the sample proportions, the combined proportion, and the sizes of the samples. The correct calculation results in a test statistic of -0.5319.

A Sample of Size 100 Selected from One Population Has