Question: Exercise - chapter 7 WAITING LINE MODEL 1. A crew of mechanics at the Department of Transportation garage make minor repairs to snowplows during the

Exercise - chapter 7 WAITING LINE MODEL 1. A crew

Exercise - chapter 7 WAITING LINE MODEL 1. A crew of mechanics at the Department of Transportation garage make minor repairs to snowplows during the winter. The snowplows break down at an average rate of 4 vehicles per day and breakdowns are distributed according to the Poisson distribution. The mechanic can service an average of 7 vehicles per day with a repair time distribution that approximates a negative exponential distribution. Assume an 8-hour day. i. What is the utilization rate for the mechanic? ii. What is the average time that a snowplow is out of service? On average, how long does a snowplow wait before the mechanic can begin his repair? iv. Approximately how many vehicles are in the garage, waiting for repairs or being repaired

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