If all other factors are held constant, increasing the number of subjects in a survey will cause the width of a confidence interval to
A) decrease.
B) increase.
C) show no change.

Question

Quizplus · Accepted Answer

Increasing the number of subjects in a survey will cause the width of a confidence interval to decrease. This is because as the sample size increases, the standard error of the mean decreases, which leads to a narrower confidence interval.

If All Other Factors Are Held Constant, Increasing the Number