A researcher selects a sample of 121 participants from a population with a mean of 32 and a standard deviation of 22.What is the standard error of the mean?
A) 32
B) 2.0
C) 0.5
D) There is not enough information to answer this question.

Question

Quizplus · Accepted Answer

The formula for calculating standard error of the mean is:
Standard error of the mean = standard deviation / square root of sample size
In this case, the standard deviation (s) is 22 and the sample size (n) is 121.
Standard error of the mean = 22 / sqrt(121) = 2.0

A Researcher Selects a Sample of 121 Participants from a Population