Recent content by Mathemag1c1an

Thanks a lot

I knew something was wrong with the question:

but how do we integrate the x!(y-x)!

but how do i integrate the factorials?

Marginal Probability function?Anyone I have this question which I cannot seem to solve: The joint probability mass function p(x, y) of two discrete random variables X and Y is given by. p(x,y) = ([5^x][7^y][e^-5])/x!(y-x)! x and y are non-negative integers and x <= y (i) Find the marginal...

I have this question which I cannot seem to solve: The joint probability mass function p(x, y) of two discrete random variables X and Y is given by. p(x,y) = ([5^x][7^y][e^-5])/x!(y-x)! x and y are non-negative integers and x <= y (i) Find the marginal probability mass functions of X and Y.