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.
Answer:C
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.