8. For a sample of 20 individuals with a mean of $64,000 and a standard deviation of $14,327, what would the confidence interval be for an a = .05. a. 57,294.83 to 70,705.17 b. 60,796.29 to 70,705.37 c. 57,294.63 to 70,682.94 d. 60,796.29, 70,682.93 9. A researcher found that 5% of the 200 individuals surveyed had been a victim of a crime in the prior month. What would the 95% confidence interval be? a. 0.05 to 0.10 b. 0.02 to 0.08 c. 0.05 to 0.08 d. 0.03 to 0.06 10. A hypothetical study found that 747 out of 1, 168 male high school students had used drugs in the past week. What would the 95% confidence interval be if =.640, SE() = .014. a. .604 and .668 b. .612 and .676 c. .604 and .676 d. .613 and .667