Random variables X and Y have the joint PMF (c|x + yl Px.x(x,y) = mo x= -1,0,1 y = -2,0,2 otherwise 0 a. What is the value of the constant c? b. What is P [Y < X]? c. What is P [Y > X]? d. What is P [Y = X]? e. What is P [X < 1)? f. Find the marginal PMFS Px (x) and Py(y) g. Find the expected values E[X] and E[Y] h. Find the standard deviations Oy and Oy