4.43 Consider the probability distribution for the random vari- able x shown here: NN .2 4 2a. Find u = E(x). b. Find o2 = EL (x - M) 2]. c. Find o. d. Interpret the value you obtained for u. e. In this case, can the random variable x ever assume the value u? Explain. f. In general, can a random variable ever assume a value equal to its expected value? Explain