You can decrease the width of a confidence interval by:
A)lowering the confidence level or decreasing the sample size
B)increasing the confidence level or decreasing the sample size
C)lowering the confidence level or increasing the sample size
D)increasing the confidence level or increasing the sample size

Question

Quizplus · Accepted Answer

Lowering the confidence level or increasing the sample size reduces the margin of error, thus decreasing the width of the confidence interval.

You Can Decrease the Width of a Confidence Interval By