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A recent Maryland highway safety study found that in 77% of all accidents the driver was...

A recent Maryland highway safety study found that in 77% of all accidents the driver was wearing a seatbelt. Accident reports indicated that 92% of those drivers escaped serious injury (defined as hospitalization or death), but only 63% of the nonbelted drivers were so fortunate.

Draw a tree diagram.

a. What is the probability that a person was seriously injured?

b. What is the probability that given a driver was seriously injured, they were not wearing a seatbelt?

Math   Statistics-And-Probability   
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