Algebra Hello I need manaul solution of this problem. thx Problem 1 Giving that X. X2, Assuming that fx, X are N random variable with expectation value &,&2&N, respectively. y(x, x,y) is the joint density function of N random variables. Find the expectation of new random variable, X given by N X=g(X1, X2, XN) = 711 Hint: you can use concept of marginal probability of k-dimensional RVs with k = 1.