The U.S. National Highway Traffic Safety Administration gathers
data concerning the causes of highway crashes where at least one
fatality has occurred. From the 1998 annual study, the following
probabilities were determined (BAC is blood-alcohol level):
Suppose over a certain stretch of highway during a 1-year period,
the probability of being involved in a crash that results in at
least one fatality is 0.025. It has been estimated that 15%
of all drivers drive while their BAC is grater than .09. Determine
the probability of a crash with at least one fatality if a driver
drives while legally intoxicated (BAC greater than 0.09).
Probability =