7.34.

(a) Suppose that the random variable X assumes the values -1 and 1 each with probability. Consider P[|X E(X) kV(X)] as a function of k, k > 0. Plot this function of k and, on the same coordinate system, plot the upper bound of the above probability as given by Chebyshev's inequality.

(b) Same as

(a) except that P(X = -1) = P(X = 1) = }