There is only one copying machine in the student lounge of the business school. Students arrive at the rate of λ = 45 pe

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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 40 seconds, or μ = 90 per hour (according to a negative exponential distribution). a) The percentage of time the machine is used = 50 percent (round your response to the nearest whole number). b) The average length of the queue = 5 students (round your response to two decimal places). c) The average number of students in the system students (round your response to two decimal places). N