As sample size increases,confidence interval width
A)increases.
B)decreases.
C)remains the same.
D)changes proportionally.

Question

Quizplus · Accepted Answer

As the sample size increases, the standard error decreases, which in turn decreases the width of the confidence interval. This is because a larger sample size provides more precise estimates of the population parameter, and hence less variability, resulting in a narrower confidence interval. Therefore, choice B is the correct answer.

As Sample Size Increases,confidence Interval Width