Which of the following will result in a larger margin of error in an application involving the estimation of a population mean?
A) Increasing the sample size
B) Decreasing the confidence level
C) Increasing the sample standard deviation
D) All of the above

Question

Quizplus · Accepted Answer

Increasing the sample standard deviation increases the variability in the data, which directly increases the margin of error in estimating the population mean. Increasing the sample size or decreasing the confidence level actually decreases the margin of error.

Which of the Following Will Result in a Larger Margin