. confidence intervals . confidence levels . margin of error. Multiple choice 1. A poll was conducted about an upcoming election. The results are considered accurate within 13.8 percent points, 9 times out of 10. State the confidence level. a. 99% b. 90% C. 95% d. 19% 2. A poll was conducted about an upcoming election. The result that 44% of people intend to vote for one of the candidates is considered accurate within 12.7 percent points, 19 times out of 20. State the confidence interval. a. 42.65%-45.35% b. 41.3%-44% C. 41.3%-46.7% d. 44%-46.7% 3. The results of a survey have a confidence interval of 56.0% to 64.6%, 9 times out of 10. Determine the margin of error. a. 18.6% b. +56.0% C. +64.6% d. 14.3% 4. Which sample size will have the least margin of error? a. It is impossible to tell. b. 2000 C. 3000 d. 1000 5. In a recent survey of high school students, 72% of those surveyed agreed that school should start half an hour later. The survey is considered accurate to within 3.5 percent points, 19 times out of 20. If a high school has 1200 students, state the range of the number of students who would agree with the survey. a. 864-906 b. 822-906 C. 822-864