A service station has both self-service and full-service islands. On each island, there is a single regular unleaded pump with two hoses. Let X denote the number of hoses being used on the...

Extracted text: A service station has both self-service and full-service islands. On each island, there is a single regular unleaded pump with two hoses. Let X denote the number of hoses being used on the self-service island at a particular time, and let Y denote the number of hoses on the full-service island in use at that time. The joint pmf of X and Y appears in the accompanying tabulation. y P(x, y) 1 2 o 0.10 0.05 0.01 1 0.06 0.20 0.08 2 0.06 0.14 0.30 * Compute the marginal pmf of X. 1 Compute the marginal pmf of Y. y 1 Using p,(x), what is P(X s 1)? P(Xs 1) = |