Confidence intervals for the population mean µ and population proportion p _____ as the size of the sample increases.
A) become narrower
B) become wider
C) remain the same
D) get closer to 1.

Question

Quizplus · Accepted Answer

As the sample size increases, the standard error of the mean and proportion decreases, which leads to narrower confidence intervals. This is because a larger sample size provides more information about the population, resulting in a more accurate estimate of the population parameter.

Confidence Intervals for the Population Mean µ and Population Proportion