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Média e variação de um exemplo da variável hipergeométrica 1

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    Henock A.
    ET
    Henock A.

    done

    Bah S.
    GN
    Bah S.

    In the above example n=3 but in the formula D/n, 6/9 while n=3, i think we should have 6/3. please advise

    Rachel N.
    IE
    Rachel N.

    The mean and variance of a hypergeometric random variable example

    Jahidul I.
    BD
    Jahidul I.

    The mean and variance of a hypergeometric random variable example Example : A collection of nine cards are collected, including six Hearts and three Diamonds. Choose samples of three cards from the population. (a) What is the variance of the number of Heart cards in a sample of three cards? (b) What is the standard deviation?

    Jahidul I.
    BD
    Jahidul I.

    what is the statistics ?

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