X : B(1, p)
Y: B(1, p)
What's the distribution of X-Y?
Now, X: B(1, p1) and Y: B(1, p2)
What about X+Y?
First one (similar approach for second one) above I get :
Value 0 with prob 1 - 2p^2
Value -1 with prob p^2
Value 1 with prob p^2
Are these any of the standard distributions? I somehow feel can't be this simple!
thnx in advance!