A researcher wants to select a sample of 30 participants from one of two populations.In Population A,the standard deviation is 12.In Population B,the standard deviation is 4.In this example,selecting a sample from Population A will produce the smallest standard error.

Question

Quizplus · Accepted Answer

The standard error is calculated by dividing the standard deviation by the square root of the sample size. Since the standard deviation of Population B is smaller than that of Population A, the standard error will be smaller if a sample is selected from Population B.

A Researcher Wants to Select a Sample of 30 Participants