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Math Help - Another Difficult prob/stat question!

  1. #1
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    Another Difficult prob/stat question!

    Suppose that 10% of the licensed drivers in y our community have been cited for drunken driving. A study reveals that 80% of the drivers who have a history of drunken driving will be cited again, and that 20% of those with no previous history of drunken driving will receive a drunken driving citation. What is the probability that a motorist who is arrested for drunken driving will have been cited in the past?
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  2. #2
    Junior Member
    Joined
    May 2007
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    I'm looking at 8%
    the 10% of drivers being cited before times the 80% chance that they will be cited again
    10% x 80%
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