stat problem

The joint PMF for X and Y is given as follows: Y X O 1 2 0 0.003 0.388 0.009 1 0.005 0.485 0.010 2 0.004 0.090 0.006 1. Find the marginal distribution for X. 2. Find the marginal distribution for Y. 3. Find the conditional distribution of Y given that X = 1. 4. Find the conditional mean of Y given that X = 1