The risk that the confidence interval does not contain the population mean can be reduced by ________.
A)decreasing the sample size
B)increasing the population size
C)increasing the sample size
D)decreasing the population size

Question

Quizplus · Accepted Answer

Increasing the sample size will reduce the standard error of the sample mean, which will in turn make the confidence interval narrower and increase the chance that it will contain the population mean. Decreasing the population size or decreasing the sample size would have the opposite effect, and increasing the population size would have little to no effect on the confidence interval.

The Risk That the Confidence Interval Does Not Contain the Population