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Math Help - combining 2 probabilities

  1. #16
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    Nov 2010
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    crap, i dont think thats right either
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  2. #17
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    Nov 2010
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    ok. im beginning to see where I am going wrong.

    the probability that A doesnt score and B doesnt concede is always 1

    the probability that A doesnt score or B doesnt concede is either 1 or 0

    The events are opposite sides of the same event in a way.

    I need the probability that A doesnt score given that B doesnt concede, but the formula for that ( conditional probability) involves using (A and B), which I know I cant use because of the reasons above, so I am back to square one again.

    Any more help?
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