7. Eileen and Clint are each attempting to estimate the proportion of OSU students who regularly ride the COTA city bus. Eileen surveys a random sample of n = 1025 students and finds that 492 of the students in her sample regularly ride the COTA city bus. Clint surveys a random sample of n = 472 students and finds that 227 of the students in his sample regularly ride the COTA city bus. If Eileen and Clint each construct a 95% confidence interval based on their respective sample data, we'd expect Eileen's interval to have A. the same margin of error as Clint's interval since Eileen and Clint are sampling from the same population. B. a larger margin of error than Clint's interval because her sample size is larger than Clint's sample size. C. a smaller margin of error than Clint's interval because her sample size is larger than Clint's sample size. D. a larger margin of error than Clint's interval because, compared to Clint's sample, a larger number of the students surveyed by Eileen said they regularly ride the COTA city bus. E. a smaller margin of error than Clint's interval because, compared to Clint's sample, a larger number of the students surveyed by Eileen said they regularly ride the COTA city bus. 8. Suppose you decide that you want to construct a 92% confidence interval. This would mean the z* value would need to be between and A. 1.96; 2.58 B. 1.52; 1.64 C. 2:58; 3.19 D. 1.64; 1.96 E. It is impossible to answer this question without knowing the sample size. 9. A 99% confidence interval for a population proportion is calculated using data from a random sample of size n = 100, and this interval ends up being from 0.77 to 0.95. Which of the following must be the 90% confidence interval calculated from the same data? A. 0.87 to 0.96 B. 0.80 to 0.92 C. 0.75 to 0.98 D. 0.82 to 0.90 E. 0.71 to 0.83 10. Which one of the following statements about confidence intervals is false? A. Given the same sample of data, a 99% confidence interval will be wider than a 95% confidence interval. B. The size of the population affects the width of a confidence interval. C. The sample statistic determines the center of the confidence interval. D. The value of z" affects the width of a confidence interval. E. The general format of a confidence interval is "sample statistic + margin of error."