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Thread: Urgent Help Please

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    Urgent Help Please




    I have this statistics problem that i must solve as soon as possible.

    You have 5 oil paints and 6 water paints. The director of the museum picks an exhibition of 3 oil paints and 4 water paints. How many are the probabilities there are to form the exhibiton.

    I will really apprecciate your help
    Thanks again
    Tik

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    Hi Tik,

    Welcome to TS. This is a hypergeometric probability. There are two kinds of paints. You are picking 7 out of 11 in total, 3 of them needs to be oil based. Thus we have:

    P = C(5,3)*C(6,4)/C(11,7)

    where C(n,m) stands for n choose m.

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    Tik, Jin,

    Are we looking for a probability distribution here, or do we need to just find the number of possible exhibitions?

    If it's just the number, then the answer is slightly different, and is just

    C(5,3)*C(6,4) = 150 different possible exhibitions

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    Quote Originally Posted by tik
    How many are the probabilities there are to form the exhibiton.
    Should be either "What is the probability of ..." or "How many possible ways..."

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