Which of the following factors strongly affects the width of a confidence interval?
A) sample size
B) sample mean
C) population mean
D) population size

Question

Quizplus · Accepted Answer

The width of a confidence interval is strongly affected by the sample size. Larger sample sizes tend to produce narrower confidence intervals, indicating a more precise estimate of the population parameter. The sample mean, population mean, and population size do not directly affect the width of the confidence interval in the same way.

Which of the Following Factors Strongly Affects the Width of a Confidence