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Math Help - Probability

  1. #1
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    Probability

    Okay I have asked about everyone I know and have searched the net for a couple of hours and still cannot figure this out. Here's my problem...

    I'm trying to create a chart to show the probability of rolling a 1 or 2 on a 6 sided die. I want to be able show when you roll multiple dice, what your odds or rolling multiple results of 1 or 2 are.

    A chart I would like to create would look like the following:

    # of Dice Rolled 1 2 3 4 5

    # of 1 % % % % %
    success 2 % % % % %
    results of 3 % % % % %
    1 or 2 4 % % % % %
    5 % % % % %

    Hopefully I explained this as clear as possible. Thanks for the help!
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  2. #2
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    Quote Originally Posted by tijuanadagger View Post
    Okay I have asked about everyone I know and have searched the net for a couple of hours and still cannot figure this out. Here's my problem...

    I'm trying to create a chart to show the probability of rolling a 1 or 2 on a 6 sided die. I want to be able show when you roll multiple dice, what your odds or rolling multiple results of 1 or 2 are.

    A chart I would like to create would look like the following:

    # of Dice Rolled 1 2 3 4 5

    # of 1 % % % % %
    success 2 % % % % %
    results of 3 % % % % %
    1 or 2 4 % % % % %
    5 % % % % %

    Hopefully I explained this as clear as possible. Thanks for the help!
    If you have n dice then the probability of rolling either a 1 or a 2 x times is given by ^nC_x \left( \frac{1}{3} \right)^x \left( \frac{2}{3} \right)^{n-x}.

    This result can be got using the binomial distribution.
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