The Population of All Sample Proportions Has a Normal Distribution

question 27

Multiple Choice

The population of all sample proportions has a normal distribution if the sample size (n) is sufficiently large. The rule of thumb for ensuring that n is sufficiently large is

• A) np ≥ 5.
• B) n(1 − p) ≥ 5.
• C) np ≤ 5.
• D) n(1 − p) ≤ 5 and np ≤ 5.
• E) np ≥ 5 and n(1 − p) ≥ 5.

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