Question

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This table is based on records of "injury" motor vehicle accidents where the occupants either sustained a nonfatal injury or at least one of the occupants sustained a fatal injury. The data were compiled by a State Highway Safety and Motor Vehicles Office. If we randomly select someone injured in a motor vehicle accident, what is the probability that the person was wearing a seatbelt? Enter your answer as a decimal and round to four decimal places. Nonfatal Injury Fatal Injury Row Total Seat belt 412,364 518 412,882 No seat belt 162,427 1,694 164,121 Column total 574,791 2,212 577,003 0.7156

Answer 1

Let A be the event that a person was wearing a seatbelt

P(A) = P()

probability=number of favorable outcomes./Total outcomes

number of favorable outcomes.=Number of person was wearing a seatbelt =412882

Total outcomes=total seat b person was wearing a seatbeltelt=577003

P(A)=412882/577003=0.7156

#probability of person was wearing a seatbelt is 0.7156