There is only one copying machine in the student lounge of the business school. Students arrive at the rate of λ=45 per hour? (according to a Poisson? distribution). Copying takes an average of 50 ?seconds, or μ =72 per hour? (according to a negative exponential? distribution).
?a) The percentage of time the machine is used? =
b) The average length of the queue? =
c) The average number of students in the system?
d) The average time spent waiting in the queue?
e)The average time in the system?