Chapter 10.1, Problem 34E

To determine

To find out from the options that the two sample z test for the difference in the true proportion gives what result.

Answer to Problem 34E

The option (e) is the correct option.

Explanation of Solution

As we see in the question given that the Normal requirement requires that the number of failures in the number of successes in both samples are greater than $10$ .

We note that there are $7$ successes in the first sample and $2$ successes in the second sample, thus the Normal requirement is not satisfied. Thus, we can say that option (e) is the correct option that it should not be used because the normal condition is violated.