13. An insurance company checks police records on 582 accidents selected at random and notes that teenagers were at the wheel in 94 of them. Complete parts a) through d). a) Construct the 95% confidence interval for the percentage of all auto accidents that involve teenage drivers. 95% CI = %, % (Round to one decimal place as needed.) b) Explain what your interval means. O A. We are 95% confident that the percent of accidents involving teenagers is 16.2%. O B. We are 95% confident that a randomly sampled accident would involve a teenager a percent of the time that falls inside the confidence interval limits. O C. We are 95% confident that the true percentage of accidents involving teenagers falls inside the confidence interval limits. c) Explain what "95% confidence" means. About 95% of random samples of size 582 will produce (1) that contain(s) the (2) of accidents involving teenagers. d) A politician urging tighter restrictions on drivers' licenses issued to teens says, "In one of every five auto accidents, a teenager is behind the wheel." Does the confidence interval contradict this statement? O A. The confidence interval contradicts the assertion of the politician. The figure quoted by the politician is inside the interval. O B. The confidence interval does not contradict the assertion of the politician. The figure quoted by the politician is inside the interval. O C. The confidence interval does not contradict the assertion of the politician. The figure quoted by the politician is outside the interval. O D. The confidence interval contradicts the assertion of the politician. The figure quoted by the politician is outside the interval. (1) O confidence intervals (2) O confidence interval O a true proportion O true proportion a sample proportion sample proportion14. You drop by your local independent coffee shop on your way to class. While standing in line, you notice that 85% of the 20 customers are texting. Assume these customers form a reasonably random sample of all potential customers. If we tried to make a confidence interval for the proportion of texting customers, which condition would be violated? Choose the correct answer below. O A. 10% condition O B. Randomization condition O C. Success/Failure condition 8/12 15. A statistics professor wants to see if more than 80% of her students enjoyed taking her class. At the end of the term, she takes a random sample of students from her large class and asks, in an anonymous survey, if the students enjoyed taking her class. Which set of hypotheses should she test? O A. Ho: P 0.80 O C. Ho: P = 0.80 HA : P 0.80 HA: p= 0.8016. We conduct a significance test with Ho: p = 0.43 and HA: p