4. Looking at the tables of joint distribution and marginal distribution answer the following questions: Pr(X=x, Y=y) Y=3 Y=5 Y=7 X= 2 0.15 0.15 0.3 X=4 0.15 0.1 0.15 1. Using the above joint distributions, fill in the marginal distribution for RV Y for each outcome ( the marginal probabilities for X have been filled in for you)