# Question: let the random variable x and y have joint pdf...

###### Question details

Let the random variable X and Y have joint pdf f(x,y) = 4/7(x^2
+ 3y^2) , 0<x<1, 0<y<1.

e) Find Var (X) and Var (Y).

f) Find Cov (X, Y).

g) Find P(Y < 1/3|X= 3).

h) Find E(Y|X = 1/2.