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# Testing Hypothesis: Conditions

APSTAT-HTYN4A

Which of the following is/are conditions necessary for a one-proportion Z-test?

I. The data must come from a simple random sample.
II. $np$ and $n(1-p)$ must both be more than $10$, where n is the sample size and p is the probability of success.
III. The sample size must be more than $30$.

A

I only.

B

II only.

C

III only.

D

I and II only.

E

II and III only.