The distribution of means based on a sample size of 20, pulled from a population distribution with a mean of 100 and a standard deviation of 15, would have a standard error of:
A) 1.33.
B) 3.35.
C) 5.16.
D) 5.33.

Question

Quizplus · Accepted Answer

The standard error of the mean is calculated as the population standard deviation divided by the square root of the sample size. Here, it is 15 / sqrt(20), which equals approximately 3.35.

The Distribution of Means Based on a Sample Size of 20