please solve C and and solve D- the probability that more than 1 machine is in the system? The probability that more than two machines are in the system? The probability that more than three machines are in the system? The probability that more than four machines are in the system?

Virginia's Ron McPherson Electronics Corporation retains a service crew to repair machine breakdowns that occur on an average of =3 per 8 -hour workday (apt crew can service an average of =8 machines per workday, with a repair time distribution that resembles the negative exponential distribution. a) The utiization rate of this service system = (round your response to fwo decimal places). b) The average downtime for a broken machine = days (round your response to two decimal places). c) The average number of machines waiting to receive service at any given time = machines (round your response to three decimal places)