Given the marginal probabilities, P(A) and P(B), nd pUB, the upper bound of P(AB), and 131.3, the lower bound of P(AB). pLB S P(AB) S PUB Q2.1 1 Point Suppose P(A) = 0.3 and P(B) = 0.4. PLB = O L PUB = 0.7Q2.2 1 Point Suppose P(A) = 0.9 and P(B) = 0.7. PLB 0.6 PUB L