Problem 3 In Muscat city, there are two types of services at a gas station. The gas station has a single regular lead-free pump with two hoses. In this context, A indicates the number of hoses being utilized on the self-service station at a certain time and B indicates the number of hoses on the full-service station utilizes at that time. The joint pmf of A and B i.e., FAB(AB) is shown below. в о 1 2 A 0.14 0.02 0.09 1 0.05 0.29 0.05 2 0.10 0.13 0.13

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Chapter1: Combinatorial Analysis
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Problem 3
In Muscat city, there are two types of services at a gas station. The gas station has a single
regular lead-free pump with two hoses. In this context, A indicates the number of hoses being
utilized on the self-service station at a certain time and B indicates the number of hoses on the
full-service station utilizes at that time. The joint pmf of A and B i.e., fazAB) is shown below.
В
1
2
A
0.14 0.02
0.05 0.29
0.10 0.13
0.09
1
0.05
0.13
a. What is the probability that there is at most one self -service and at most one full-service
hose during this event?
b. Give a word description of the event {A#1 and B#1}, compute the probability of this
event.
c. What is the probability that there is exactly one hose used in self-service during an
event?
d. Compute the marginal pmf of A and of B. Using PA(A), what is P(A<=1)?
Are A and B independent events? Explain.
Transcribed Image Text:Problem 3 In Muscat city, there are two types of services at a gas station. The gas station has a single regular lead-free pump with two hoses. In this context, A indicates the number of hoses being utilized on the self-service station at a certain time and B indicates the number of hoses on the full-service station utilizes at that time. The joint pmf of A and B i.e., fazAB) is shown below. В 1 2 A 0.14 0.02 0.05 0.29 0.10 0.13 0.09 1 0.05 0.13 a. What is the probability that there is at most one self -service and at most one full-service hose during this event? b. Give a word description of the event {A#1 and B#1}, compute the probability of this event. c. What is the probability that there is exactly one hose used in self-service during an event? d. Compute the marginal pmf of A and of B. Using PA(A), what is P(A<=1)? Are A and B independent events? Explain.
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