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Math Help - Probability

  1. #1
    Newbie
    Joined
    Sep 2007
    Posts
    7

    Probability

    Hi ...I have another question><


    The number showing on the upper faces when two fair six-sided dice are tossed is observed. Consider events A and B defined as:
    A - the total score is at least 8
    B - at least one die achieves a score of 2 or less

    Find 1. P(B') ( 3 dec pl)
    2. P(A or B) ( 3 dec pl)

    Thanks
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  2. #2
    MHF Contributor
    Joined
    Aug 2007
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    USA
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    Thanks
    2
    This is a definition problem, not a calculation problem.

    Write down the entire distribution.

    Row and Column Titles are 1, 2, 3, 4, 5, 6

    Add them up in the interior, making 2, 3, 3, ..., 12

    Now answer the questions by looking at the distribution.
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