In a Metropolitan Area, One Out of Ten Drivers on the Road

Multiple Choice

In a metropolitan area, one out of ten drivers on the road on Saturday after midnight is intoxicated. Half of all accidents during this time period involve drunk drivers. Finally, the overall accident rate on Saturday after midnight is 3 accidents per 100 cars on the road. For a drunk driver, the risk of accident is:

A) .10.
B) .15.
C) .50.
D) .03
E) .05