In: Statistics and Probability
3. (i) Find the probability P(0<X1<1/3 , 0<X2<1/3) where X1, X2 have the joint pdf
f(x1, x2) = 4x1(1-x2) , 0<x1<1 0<x2<1
0, otherwise
(ii) For the same joint pdf, calculate E(X1X2) and E(X1 + X2)
(iii) Calculate Var(X1X2)