Answer Happy

The parts department of a large automobile dealership has a counter used exclusively for mechanics' requests for parts. The time between requests can be modeled by a negative exponential distribution that has a mean of 3 minutes. A clerk can handle requests at a rate of 10 per hour, and this can be modeled by a Poisson distribution that has a mean of 10. Suppose there are 3 clerks at the counter. Use Table 18-4. a. On average, how many mechanics are waiting in line? (Round your answer to 3 decimals.) b. On average, how many mechanics would be at the counter, including those being served? (Round your answer to 3 decimals) Le c. What is the average wait time for a mechanic? (Round your answer to 3 decimals.) Wa hours
c. What is the average wait time for a mechanic? (Round your answer to 3 decimals) d. If a mechanic has to wait, on average, how long will he have to wait for assistance? (Round your answer to 3 decimals.) Wi hours e. What is the probability that a mechanic would have to wait for service? (Do not round intermediate calculations. Round your answer to 3 decimals.) Pw