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Barry works at an ice cream counter of a food court. Customers arrive at a mean rate of 6 per hour. The mean service rate is 9.5 per hour. Assume it is a single-server waiting line model.
(a) Determine the mean arrival rate and the mean service rate.
(b) Determine the probability that a customer will have an empty queue.
(c) Determine the probability that 2 customers are in the queuing system.
(d) Determine the average number of customers in the queue and the average number of customers in the system.
(e) Determine the average waiting time in the queue and the average total time in the system for a customer.
(f) Find the utilization factor of the server.
suppose Barry can be replaced by another server, Nina, who must be paid $15 per hour whereas Barry is paid $10 per hour. Nina can serve 12 customers per hour. If a customer's time is considered to be worth $8 per hour, is it worth to replace Barry with Nina?
Assuming marginal cost of managing an additional supplier is $15,000 per year how many suppliers should Witt use? Assume there are up to (3) nearly identical suppliers nearby.
emove the data related to the out-of-control points you observed from the original data also re compute a new X-Bar-Bar, R-Bar also associated control limits. Elucidate how the two sets of Control Charts are different. Illustrate what has changed.
Max Stamp approves study abroad documents for Penn. Students must wait in line with their forms outside Max's office. One student at a time is allowed in his office and Max takes precisely 25 minutes to evaluate each student's set of documents
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A product is currently made in a process-focused shop, where fixed costs are $9000 per year and variable cost is $50 per unit. The firm is considering a fundamental shift in process
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