Suppose that 20% of a random sample of n = 64 men are currently single. What is the standard error of the proportion of single men in the sample?
A) 0.125
B) 0.05
C) 0.10
D) 0.20

Question

Quizplus · Accepted Answer

The standard error (SE) of the proportion is calculated using the formula SE = sqrt[p(1-p)/n], where p is the proportion (in this case, 0.20 for 20%) and n is the sample size (64). Plugging the values in, SE = sqrt[0.20(0.80)/64] = sqrt[0.16/64] = sqrt[0.0025] = 0.05.

Suppose That 20% of a Random Sample of N =