Question: [1] The joint probability mass function of two discrete random variables X and Y is f(x,y) ={cxy ,x=1,2,3 and y=1,2 0 , otherwise Find the

[1] The joint probability mass function of two discrete random variables X and Y is

f(x,y) ={cxy ,x=1,2,3 and y=1,2

0 , otherwise

Find the value of c and the correlation of X and Y

[2] Consider the two random variables in problem [1]. Find the correlation of X and Y when X+Y>3.

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