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    Teracomm's Avatar
    Teracomm Posts: 20, Reputation: 2
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    #1

    Feb 20, 2009, 02:52 AM
    Probability in two events
    If the probability of Team A winning against Team B is 91%. And the probability of Team C winning against Team D is 95%. What is the probability of Teams A and C both winning?
    (Calculation and answer please)
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    Feb 20, 2009, 03:10 AM

    If you flip a coin twice, where the probability of heads "winning" over tails is 50%, what's the probability of heads "winning" both times?

    How can you apply the answer to this simple case to your problem?
    Teracomm's Avatar
    Teracomm Posts: 20, Reputation: 2
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    #3

    Feb 20, 2009, 03:37 AM
    Quote Originally Posted by Capuchin View Post
    If you flip a coin twice, where the probability of heads "winning" over tails is 50%, what's the probability of heads "winning" both times?

    How can you apply the answer to this simple case to your problem?
    I am not. You mentioned coin flipping; not me.
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #4

    Feb 20, 2009, 02:29 PM

    Here's the method for doingthis. If the probability of one event occurring is p, and the probability of a different event occurring is q, then the probability of both events occurring is p*q. A caveat: for this to work the two events must be independent - that is, the outcome of one event does not influence the outcome of the other. For your problem I think it's safe to assume that the outcomes of the two games are independent.

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