A random sample of 150 people was taken from a very large population. Ninety of the people in the sample were female. The standard error of the proportion is
A)0.0016
B)0.2400
C)0.1600
D)0.0400

Question

Quizplus · Accepted Answer

The standard error of the proportion is calculated using the formula SE = sqrt[p(1-p)/n], where p is the sample proportion and n is the sample size. Here, p = 90/150 = 0.6, and n = 150. So, SE = sqrt[0.6(1-0.6)/150] = 0.0400.

A Random Sample of 150 People Was Taken from a Very