HELP ME WITH THIS 2 PROBLEMS

You may need to use the appropriate table among these tables to answer this question. Let X denote the number of Canon SLR cameras sold during a particular week by a certain store. The pmf of X is X 0 1 2 3 4 p (x) |0.1 0.2 0.3 0.25 0.15 Seventy percent of all customers who purchase these cameras also buy an extended warranty. Let Y denote the number of purchasers during this week who buy an extended warranty. (=) [Hint: P(X = 4, Y =2) equals the following. P(Y = 2|X = 4) . P(X =4) Now think of the four purchases as four trials of a binomial experiment, with success on a trial corresponding to buying an extended warranty.] What is (X = 4, ) = 2) ? (Round your answer to four decimal places.) P(X = 4, Y =2) =[ (b) Calculate P(X = Y) . (Round your answer to four decimal places.) P(X = Y) =[ (c) Determine the joint pmf of X and Y. (7 (07)= (0.3)2 ". Px (2 ) o (7 (078(0.3) * * . Px ( 1 ) Determine the marginal pmf of Y. (Round your answers to four decimal places.) 0 2 3 Py()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 pif of X and Y appears in the accompanying tabulation. P( I, y) 1 0 0.10 0.03 0.02 1 0.06 0.20 0.08 2 0.05 0.14 0.32 (=) What is P(X = 1 and Y =1) P(X = 1 and Y =1) =[ (b) Compute P(X