I'd be very grateful if someone can show me the nuts and bolts of how this works
Suppose that X and Y are discrete random variables with
Now, I know the marginals are binomials with n=4 and p = 1/2 for and p = 1/3 for .
So just takin X for now, as I see it the marginal for X, , should be
But how does this, if it is correct, reduce to
? I cant see it, and I'd love to.
Thanks in advance. MD