A service station has both self-service and full-service islands. On each island, there is a single regular unleaded pump with t
wo 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
1 answer:
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B , A , C , D , it’s all of the above
Answer:
40+99
139
Step-by-step explanation:
Answer:
Answer: 0.4
Step-by-step explanation:
Average = (A₁+A₂+A₃+A₄+A₅)/5. Since average = 20 (GIVEN), then:
20 = (A₁+A₂+A₃+A₄+A₅)/5
Or (A₁+A₂+A₃+A₄+A₅) = 20x5
(A₁+A₂+A₃+A₄+A₅) = 100
