Confidence Interval Estimation 263CHAPTER 8: CONFIDENCE INTERVAL ESTIMATION1. The width of a confidence interval estimate for a proportion will bea) 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:cTYPE: MC DIFFICULTY: Moderate KEYWORDS: confidence
