Random samples of size 600 are taken from an infinite population whose population proportion is 0.4. The standard deviation of the sample proportions (i.e., the standard error of the proportion) is
A) 0.0004.
B) 0.2400.
C) 0.4000.
D) 0.0200.

Question

Quizplus · Accepted Answer

The standard error of the proportion is given by the formula SE = sqrt[p(1-p)/n], where p is the population proportion and n is the sample size. Plugging in the given values, we get SE = sqrt[0.4(1-0.4)/600] = 0.0200. Therefore, the answer is D).

Random Samples of Size 600 Are Taken from an Infinite