If we wish to determine whether there is evidence that the proportion of successes is higher in group 1 than in group 2,the appropriate test to use is
A) the F test for the difference between two proportions.
B) the pooled-variance t test for the difference between two proportions.
C) the Z test for the difference between two proportions.
D) the F test for the difference between two variances.

Question

Quizplus · Accepted Answer

The appropriate test to use for determining whether there is evidence that the proportion of successes is higher in group 1 than in group 2 is the Z test for the difference between two proportions. This is because we are comparing two proportions and want to determine if there is a significant difference between them, and the Z test is specifically designed for this purpose. The F test for the difference between two proportions and the pooled-variance t test for the difference between two proportions are not appropriate because they are not designed for comparing proportions. The F test for the difference between two variances is not applicable in this case because we are not comparing variances.

If We Wish to Determine Whether There Is Evidence That