"Total 4 points) Suppose you have iid pairs of sample (X1, Y1), (X2, Y2),..., (Xn, Yn). You wish to estimate a function M(t1, t2) defined by M(t1, t2) = E(etix+tzY) where e is the natural number. Note that M(t1, t2) is a bivariate function of t1 and to after taking the expectation. Provide a consistent estimator of M(t1, t2) and show the consistency