The data are from \"Mortality Reduction with Air Bag and Seat Belt Used in Head-
ID: 3371757 • Letter: T
Question
The data are from "Mortality Reduction with Air Bag and Seat Belt Used in Head-On Passenger Car Collisions."
a) If one driver is randomly selected, find the probability he or she was using a seatbelt.
b) Find the probability of randomly selecting a driver and getting one who was not killed given that the driver was using a seatbelt.
c) If one of the drivers is randomly selected, find the probability of getting someone who did not use a seatbelt or was not killed.
Diver Killed Driver Not Killed Seatbelt used 3655 7005 Seatbelt not used 4402 3040Explanation / Answer
Total=18102
Number of people using seat belt=10660
Number of people not using seat belt=7442
Number of drivers killed=8057
Number of drivers, not killed=10045
a)
P(using seat belt)=10660/18102=0.5889
b)
p=7005/106600.6571
c)
p=(7442+10045-3040)/18102=0.7981
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