The following table lists the bivariate distribution of X and Y

The following table lists the bivariate distribution of X and Y.

X
Y 1 2
1 .5 .1
2 .1 .3

a) Find the marginal probability distribution of X.
b) Find the marginal probability distribution of Y.
c) Compute the mean and variance of X.
d) Compute the mean and variance of Y.