The Use of the Standard Normal Distribution for Constructing a Confidence

Multiple Choice

The use of the standard normal distribution for constructing a confidence interval estimate for the population proportion p requires that:

A) n $$\hat { p }$$ and n(1 - $$\hat { p }$$ ) are both greater than 5, where $$\hat { p }$$ denotes the sample proportion.
B) np and n(1 - p) are both greater than 5.
C) n $$\hat { p }$$ and n(p + $$\hat { p }$$ ) are both greater than 5.
D) the sample size is greater than 5.