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Math Help - find probability of a randomly selected driver

  1. #1
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    find probability of a randomly selected driver

    Suppose that the probability that a driver is a male, and has at least one motor vehicles accident during a one-year period is 0.12. Suppose that the corresponding probability for a female is 0.06. What is the probability of a randomly selected driver having at least one accident during the next 12 months?
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    Quote Originally Posted by nikie1o2 View Post
    Suppose that the probability that a driver is a male, and has at least one motor vehicles accident during a one-year period is 0.12. Suppose that the corresponding probability for a female is 0.06. What is the probability of a randomly selected driver having at least one accident during the next 12 months?
    0.12 + 0.06

    (A tree diagram makes this very clear).
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  3. #3
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    how do i know to just add them. i thought i needed a sample space value . i was going to do P(MuF)= P(M) +P(F) -P(M^F) and i didnt know how to find their intersection
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    Quote Originally Posted by nikie1o2 View Post
    how do i know to just add them. i thought i needed a sample space value . i was going to do P(MuF)= P(M) +P(F) -P(M^F) and i didnt know how to find their intersection
    That's why I mentioned the tree diagram ....
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