2. (25 points) Random variables x and y are independent, identically distributed (i.i.d.) random variables with PMF 3/4, drsrete ranlom k=0. Pr (k) P, (k) =11/4, GnA expec)alien k-20, in expeciaon 0 otherwise E C Find the E[x], E[xty], Varfx], Varfxtyl, and E[xy2\"].