Suppose a 95% confidence interval for µ has been constructed. If it is decided to take a larger sample and to decrease the confidence level of the interval, then the resulting interval width would be ____. (Assume that the sample statistics gathered would not change very much for the new sample.)
A) narrower than the current interval width
B) larger than the current interval width
C) the same as the current interval width
D) unknown until actual sample sizes and reliability levels were determined

Question

Quizplus · Accepted Answer

A larger sample size and a lower confidence level both contribute to a narrower confidence interval.

Suppose a 95% Confidence Interval for µ Has Been Constructed