Which of the following is a required condition for using the normal approximation to the binomial distribution in testing the difference between two population proportions?
A)n1p1 5 and n2p2 5.
B)n2(1 - p2) 5.
C)n1p1 5, n1(1 - p1) 5, n2p2 5 and n2(1 - p2) 5.
D)n1(1 - p1) 5 and n2(1 - p2) 5.

Question

Which of the following is a required condition for using the normal approximation to the binomial distribution in testing the difference between two population proportions?
A)n1p1 > 5 and n2p2 > 5.
B)n2(1 - p2) > 5.
C)n1p1 > 5, n1(1 - p1) > 5, n2p2 > 5 and n2(1 - p2) > 5.
D)n1(1 - p1) > 5 and n2(1 - p2) > 5.

Quizplus · Accepted Answer

The normal approximation to the binomial distribution requires that both the success and failure conditions are met for each sample, which means n1p1 > 5, n1(1 - p1) > 5, n2p2 > 5, and n2(1 - p2) > 5.

Which of the Following Is a Required Condition for Using