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statistics

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The students in your class with three children in their families are asked to state the number of boys in the family. What are the possible numbers? If X is the number of boys minus the number of girls in each of these families, state all the possible values of X. Make a table of probability distribution.


Step by step please?
Thanks in advance :)

  • statistics -

    Number of children = 3
    Possible number of boys = {0,1,2,3}
    X=number of boys - number of girls
    ={-3,-1,1,3}

    P(X)= probability of event X.

    b g X P(X)
    0 3 -3 1/8
    1 2 -1 3/8
    2 1 1 3/8
    3 0 3 1/8

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