Question

Problem B: Traffic at a certain intersection follows a Poisson process with rate 2/3 vehicles per minute. Ten percent of the vehicles are trucks; the other ninety percent are cars. a) What is the probability at least one truck passes in an hour? b) Given that 10 trucks have passed by in an hour, what is the expected number of vehicles that have passed by? c) Given that 50 vehicles have passed by in an hour, what is the probability there were exactly 5 trucks and 45 cars?

          Problem B:
Traffic at a certain intersection follows a Poisson process with rate 2/3 vehicles per minute. Ten
percent of the vehicles are trucks; the other ninety percent are cars.
a) What is the probability at least one truck passes in an hour?
b) Given that 10 trucks have passed by in an hour, what is the expected number of vehicles
that have passed by?
c) Given that 50 vehicles have passed by in an hour, what is the probability there were
exactly 5 trucks and 45 cars?

Problem B:
Traffic at a certain intersection follows a Poisson process with rate 2/3 vehicles per minute. Ten
percent of the vehicles are trucks; the other ninety percent are cars.
a) What is the probability at least one truck passes in an hour?
b) Given that 10 trucks have passed by in an hour, what is the expected number of vehicles
that have passed by?
c) Given that 50 vehicles have passed by in an hour, what is the probability there were
exactly 5 trucks and 45 cars?

Added by Yolanda N.

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