What conditions are necessary in order to use the z-test to test the difference
ID: 3244357 • Letter: W
Question
What conditions are necessary in order to use the z-test to test the difference between two population proportions?
Choose the correct answer below.
A. Each sample must be randomly selected, dependent, and n1p1, n1q1, n2p2, and n2q2 must be at most five.
B. Each sample must be randomly selected, independent, and n1p1, n1q1, n2p2, and n2q2 must be at least five.
C. Each sample must be randomly selected, dependent, and n1p1, n1q1, n2p2, and n2q2 must be at least five.
D. Each sample must be randomly selected, independent, and n1p1, n1q1, n2p2, and n2q2 must be at most five.
Explanation / Answer
Each sample must be randomly selected, independent, and n1p1,n1q1,n2p2,n2q2 must be at least 5. The sample size n greater than 30.