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Math Help - Need Urgent Help...Probability

  1. #1
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    Unhappy Need Urgent Help...Probability

    Hello all,

    Really could use some help:

    Two hats contain red and blue marbles with the following distributions: hat #1 has 2 red and 8 blue marbles and hat #2 has 8 red marbles and 2 blue marbles. Kathy selects a hat at random and randomly pulls out 2 marbles (without replacement). Both are blue. If she switches hats, what is the probability that she will now select a red marble?

    Thank you
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by cheyanne View Post
    Hello all,

    Really could use some help:

    Two hats contain red and blue marbles with the following distributions: hat #1 has 2 red and 8 blue marbles and hat #2 has 8 red marbles and 2 blue marbles. Kathy selects a hat at random and randomly pulls out 2 marbles (without replacement). Both are blue. If she switches hats, what is the probability that she will now select a red marble?

    Thank you
    didn't you ask this question already? no double posting please
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