# Width of a Confidence Interval

The width of a confidence interval estimate for a proportion will be:

A. narrower for 99% confidence than for 95% confidence

B. wider for a sample size of 100 than for a sample size of 50

C. narrower for 90% confidence than for 95% confidence

D. narrower when the sample proportion is 0.50 than when the sample proportion is 0.20.

https://brainmass.com/statistics/confidence-interval/width-confidence-interval-77990

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Solution:

C. 90% Confidence Interval would be narrower than a 95% ...

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This solution provides a brief explanation for finding the width of a confidence interval.

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