The Width of a Confidence Interval Will Be

Multiple Choice

The width of a confidence interval will be

A) narrower for 99 percent confidence than for 95 percent confidence.
B) wider for a sample size of 100 than for a sample size of 50.
C) narrower for 90 percent confidence than for 95 percent confidence.
D) wider when the sample standard deviation (s) is small than when s is large.