An insurance company checks police records on 560 accidents selected at random and notes that teenagers were at the wheel in 99 of them. Complete parts a) through d).
a. Construct the 95% confidence interval for the percentage of all auto accidents that involve teenage drivers.
b. Explain the interpretation of the interval calculated above.
c. What does "95% confidence" means.
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 support or contradict this statement?