A delivery truck travels from point A to point B and back using the same route each day. There…

A delivery truck travels from point A to point B and back using the same route each day. There are four traffic lights on the route. Let x1 denote the number of red lights the truckencounters going from A to B and x2 denote the number encountered on the return trip. Data collected over a long period suggest that the joint probability distribution for (x1,x2) is given by

A delivery truck travels from point A to point B and back using the same route each day. There…

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