Which of the Following Best Describes the Form of the Sampling

Multiple Choice

Which of the following best describes the form of the sampling distribution of the sample proportion?

A) When standardized,it is exactly the standard normal distribution.
B) When standardized,it is the t distribution.
C) It is approximately normal as long as n $\ge$ 30.
D) It is approximately normal as long as np $\ge$ 5 and n(1-p) $\ge$ 5.