A mechanic for Tom's Towing makes minor repairs to tow trucks after they suffer breakdowns. Tom operates a large fleet of tow trucks (essentially infinite). The trucks break down at an average rate of 5 vehicles per day and breakdowns are distributed according to the Poisson distribution. The mechanic has an average repair time of 1 hour with a distribution that approximates a negative exponential distribution. Assume an 8-hour day.

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