The larger the sample size, the ______ the confidence interval for the mean.
A) narrower
B) wider
C) broader
D) more significant

Question

Quizplus · Accepted Answer

As the sample size increases, the standard error of the mean decreases. The standard error measures the variability of sample means from sample to sample, and a smaller standard error indicates more precise measurements. A smaller standard error leads to a narrower confidence interval, which gives us more confidence in the estimate of the population mean.

The Larger the Sample Size, the ______ the Confidence Interval