Under what condition(s)does the test statistic for p have an approximate normal distribution?
A)When np 5.
B)When np and np(1 − p)are both 5.
C)When n 30.
D)When np and n(1 − p)are both 5.

Question

Under what condition(s)does the test statistic for p have an approximate normal distribution?
A)When np > 5.
B)When np and np(1 − p)are both > 5.
C)When n > 30.
D)When np and n(1 − p)are both > 5.

Quizplus · Accepted Answer

The test statistic for a proportion p has an approximate normal distribution when both np and n(1 − p) are greater than 5, ensuring that the sample size is large enough for the normal approximation to be valid.

Under What Condition(s)does the Test Statistic for P Have an Approximate