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The Width of a Confidence Interval Estimate for a Proportion

Question 205

Multiple Choice

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 if 0.50 than when the sample proportion is 0.20
E) none of these

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