How do I do this math homework problem? (10 points for best answer!)?

I actually have no clue how to do this. Any help would greatly be appreciated. Thanks! 

Suppose we toss two fair dice. Let X = i+j, where i is the outcome of the first die, and j is the outcome of the second die, with i, j ∈ {1, 2, 3, 4, 5, 6}.  

Let p(x) = P(X=x) be the probability mass function of X. 

p(2) =   

p(3) =   

p(4) =   

p(5) =   

p(6) =   

p(7) =   

p(8) =   

p(9) =   

p(10) =   

p(11) =   

p(12) =  

2 Answers

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  • ted s
    Lv 7
    1 month ago

    there are 12 different combinations ; 2 : 1 ; 3 : 2 ; 4 : 3 , 5 : 4 ; 6 : 5 , 7 : 6 ; 8 : 5 ; 9 : 4....there is symmetry....fill it out

  • 1 month ago

    This is the very basis of probability, you should review your notes or get a tutor to explain it to you (or the teacher).

    Perhaps this might help:

    https://www.khanacademy.org/math/precalculus/x9e81...

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