A simple random sample of 36 observations was taken from a large population. The sample mean and the standard deviation were determined to be 360 and 120 respectively. The standard error of the mean is
A) 3.33.
B) 3.
C) 10.
D) 20.

Question

Quizplus · Accepted Answer

The standard error of the mean is calculated by dividing the standard deviation by the square root of the sample size: 120 / √36 = 120 / 6 = 20.

A Simple Random Sample of 36 Observations Was Taken from a Large