If the standard deviation of a normally distributed population is 55.0 and we take a sample of size 25, then the standard error of the mean is
A) 11.0
B) 55.0
C) 2.2
D) 5.0

Question

Quizplus · Accepted Answer

The standard error of the mean is calculated as the standard deviation of the population divided by the square root of the sample size. Here, it is 55.0 / sqrt(25) = 55.0 / 5 = 11.0.

If the Standard Deviation of a Normally Distributed Population Is