EBK OPERATIONS MANAGEMENT
11th Edition
ISBN: 8220103630726
Author: RENDER
Publisher: PEARSON
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Chapter D, Problem 10P
Question
• • D.10 Beate Klingenberg manages a Poughkeepsie, New York, movie theater complex called Cinema 8. Each of the eight auditoriums plays a different film; the
To determine the efficiency of the current ticket operation, Beate wishes to examine several queue-operating characteristics.
- a. Find the average number of moviegoers waiting in line to purchase a ticket.
- b. What percentage of the time is the cashier busy?
- c. What is the average time that a customer spends in the system?
- d. What is the average time spent waiting in line to get to the ticket window?
- e. What is the probability that there are more than two people in the system? More than three people? More than four?
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Question 4
Skyline pizza is a famous restaurant operating a number of outlets. The restaurant uses a toll-free telephone
number to book pizzas at any of its outlets. If the clerk is occupied on one line, incoming phone calls
to the restaurant are answered automatically by an answering machine and asked to wait. As soon
as the clerk is free, the party that has waited the longest is transferred and answered first. Calls
come in at a rate of about 15 per hour. The clerk is capable of taking an order in an average of 3
minutes. Calls tend to follow a Poisson distribution, and service times tend to be exponential. The
clerk is paid $20 per hour, but because of lost goodwill and sales, CWD loses about $50 per hour
of customer time spent waiting for the clerk to take an order.
Part A
Answer the following questions:
a. What is the probability that no customers are in the system (Po)?
b. What is the average number of customers waiting for service ( Lq,
c. What is the average number of customers…
Question 8.2
A fabric factory has 5 weaving machines in use. These weaving machines need repair after about 20
hours of use. Breakdowns have been determined to be Poisson distributed. Jim, the maintenance
worker can service a weaving machine in an average of 2 hours, following an exponential distribution.
Weaving machine downtime costs $120 per hour. Jim is paid $25 per hour.
a) What is the average time a weaving machine is waiting to be repaired?
b) What is the average number of weaving machines in the repairing area?
c) What is the total hourly costs?
Question 4
Skyline pizza is a famous restaurant operating a number of outlets. The restaurant uses a toll-free telephone number to book pizzas at any of its outlets. If the clerk is occupied on one line, incoming phone callsto the restaurant are answered automatically by an answering machine and asked to wait. As soon as the clerk is free, the party that has waited the longest is transferred and answered first. Calls come in at a rate of about 15 per hour. The clerk is capable of taking an order in an average of 3minutes. Calls tend to follow a Poisson distribution, and service times tend to be exponential. The clerk is paid $20 per hour, but because of lost goodwill and sales, CWD loses about $50 per hour of customer time spent waiting for the clerk to take an order.
Part A
Answer the following questions:
a. What is the probability that no customers are in the system (Po)?
b. What is the average number of customers waiting for service ( Lq)?
c. What is the average number of customers…
Chapter D Solutions
EBK OPERATIONS MANAGEMENT
Ch. D - Prob. 1DQCh. D - Prob. 2DQCh. D - Question 3. Name the three factors that govern the...Ch. D - Prob. 4DQCh. D - Prob. 5DQCh. D - Prob. 6DQCh. D - Prob. 7DQCh. D - Prob. 8DQCh. D - Prob. 9DQCh. D - Question 10. Describe the behavior of a waiting...
Ch. D - Question 11. Discuss 1he likely outcome of a...Ch. D - Prob. 12DQCh. D - Prob. 13DQCh. D - Prob. 14DQCh. D - Question 15. What happens if two single-server...Ch. D - Prob. 16DQCh. D - Prob. 17DQCh. D - Prob. 1PCh. D - Prob. 2PCh. D - Question D.3 Paul Fenster owns and manages a...Ch. D - Prob. 4PCh. D - Prob. 5PCh. D - Prob. 6PCh. D - Question D.7 Automobiles arrive at the...Ch. D - Question D.8 Virginias Ron McPherson Electronics...Ch. D - Question D.9 Neve Commercial Bank is the only...Ch. D - Question D.10 Beate Klingenberg manages a...Ch. D - Question D.11 Bill Youngdahl has been collecting...Ch. D - Question D.12 The wheat harvesting season in the...Ch. D - Prob. 13PCh. D - Prob. 14PCh. D - Prob. 15PCh. D - Prob. 16PCh. D - Prob. 17PCh. D - Prob. 18PCh. D - Question D.19 One mechanic services 5 drilling...Ch. D - Prob. 20PCh. D - Prob. 21PCh. D - Prob. 22PCh. D - Prob. 23PCh. D - Prob. 24PCh. D - Question New England Foundry For more than 75...Ch. D - Prob. 1.2CSCh. D - New England Foundry For more than 75 years, New...Ch. D - Question The Winter Park Hotel Lori Cook, manager...Ch. D - Question The Winter Park Hotel Lori Cook, manager...
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