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Math Help - very confused on how to do this independent event problem :(

  1. #1
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    very confused on how to do this independent event problem :(

    I need some serious help with this problem. A and B are independent events, and P(A)=0.6 and P(A and B)= 0.3. Find P(B). I just do not know the steps for solving this problem.
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  2. #2
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    Re: very confused on how to do this independent event problem :(

    Quote Originally Posted by AshlynSophia View Post
    I need some serious help with this problem. A and B are independent events, and P(A)=0.6 and P(A and B)= 0.3. Find P(B). I just do not know the steps for solving this problem.
    If A and B are independent events, then P(A\cap B)=P(A)P(B). Solve for P(B)~.
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  3. #3
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    Re: very confused on how to do this independent event problem :(

    Since they are independent events
    P(A and B) = P(A)X P(B)
    0.3= 0.6X P(B)
    P(B)=0.5
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  4. #4
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    Re: very confused on how to do this independent event problem :(

    The "serious help" you needed was the definition of "indendent events". Did you look that up in your text book?
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