1. A point estimate of a confidence interval comes from a ______that is used to inter about a value from a____ A. parameter, statistic B. mean, proportion C.random variable; statistic D. sample; population confidence level, parameter 2. What is the primary purpose of a confidence interval? A. to estimate a parameter B. to estimate a statistic C. to estimate the percentage of individual values in the population D. none of these E. to test a hypothesis about a sample mean or sample proportion 3. A local company randomly selected 125 individauls who reported to be homeless in the city of Cincinnati to conduct a study. The company reported that out of the 125 homeless persons, 36 of them were veterans. Construct a 99% confidence interval for the population proportion of homeless persons who are veterans in Cincinnati A. (0.221. 0.355) B. (0.196, 0.374) C. (0.209, 0.368) D.(0.104, 0.451) E. (0.184. 0.392) 4. Using question 3, which of the following statement is correct? A. We are 99% confident that the sample proportion is 0.288. B. We are 99% confident that the population proportion is 0.288. C. This confidence interval proves that more than 25% of homeless persons are veterans. D. The margin of error for the interval is 0. 104. E . The point estimate for the confidence interval is a sample mean

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