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Virginia's Ron McPherson Electronics Corporation retains a service crew to repair machine breakdowns that occur on an average of 2 = 3 per 8-hour workday (approximately Poisson in nature). The crew can service an average of u = 6 machines per workday, with a repair time distribution that resembles the negative exponential distribution. a) The utilization rate of this service system = .5 (round your response to two decimal places). b) The average downtime for a broken machine = 33 days (round your response to two decimal places). machines (round your response to three decimal c) The average number of machines waiting to receive service at any given time = places) d) The probability that there is more than one machine that is in the system = (round your response to three decimal places). The probability that there are more than two machines that are in the system = (round your response to three decimal places). The probability that there are more than three machines that are in the system = (round your response to three decimal places). The probability that there are more than four machines that are in the system = (round your response to three decimal places)