Operations Management
2nd Edition
ISBN: 9781260484687
Author: CACHON, Gerard
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 5, Problem 15PA
Summary Introduction
To determine: Person D’s capacity to graduate students per each 3-hour session.
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Larry Ellison starts a company that manufactures high-end custom leather bags. He hires two employees. Each employee only begins
working on a bag when a customer order has been received and then she makes the bag from beginning to end. The average
production time of a bag is 1.7 days, with a standard deviation of 3 days. Larry expects to receive one customer order per day on
average. The interarrival times of orders have a coefficient of variation of one.
X Answer Is complete but not entirely correct.
(Carry at least 4 decimal places in all intermediate calculations.
Round your final answer to 2 decimal places.)
What is the expected duration, in days, between when an order is
received and when production begins on the bag?
30.39 8 days
The Decision Sciences Department is trying todetermine whether to rent a slow or a fast copier. Thedepartment believes that an employee’s time is worth $15per hour. The slow copier rents for $4 per hour and it takesan employee an average of 10 minutes to complete copying(exponentially distributed). The fast copier rents for $15 perhour and it takes an employee an average of 6 minutes tocomplete copying. An average of 4 employees per hour needto use the copying machine (interarrival times areexponential). Which machine should the department rent?
An injector machine goes down roughly 20% of the time (the injector gums up and needs to be cleaned, a quick process). One operator is assigned to service three identical such machines. Each machine can produce 100 parts/h if running properly (i.e., not down). The operator is paid $10/h and each machine costs $20/h to operate. Consider 8hr/shift
a) Please fill in the table below:
b) How many parts can you produce per shift?
c) What is the unit cost fper part for this operation?
d) If you hire another operator at the same rate to assist the first operator, what is the unit cost now?
e) Is it worth hiring another operator at the same rate to assist the first operator, in case more than one machine goes down at the same time?
Chapter 5 Solutions
Operations Management
Ch. 5 - Prob. 1CQCh. 5 - Prob. 2CQCh. 5 - Prob. 3CQCh. 5 - Prob. 4CQCh. 5 - Prob. 5CQCh. 5 - Prob. 6CQCh. 5 - Prob. 7CQCh. 5 - Prob. 8CQCh. 5 - Prob. 9CQCh. 5 - Prob. 10CQ
Ch. 5 - Prob. 11CQCh. 5 - Prob. 12CQCh. 5 - Prob. 13CQCh. 5 - Prob. 14CQCh. 5 - Prob. 15CQCh. 5 - Prob. 16CQCh. 5 - Prob. 1PACh. 5 - Prob. 2PACh. 5 - Prob. 3PACh. 5 - Prob. 4PACh. 5 - Prob. 5PACh. 5 - Prob. 6PACh. 5 - Prob. 7PACh. 5 - Prob. 8PACh. 5 - Prob. 9PACh. 5 - The help desk at Triple Stacked handles calls from...Ch. 5 - Prob. 11PACh. 5 - A pharmaceutical company creates a compound with a...Ch. 5 - Prob. 13PACh. 5 - Prob. 14PACh. 5 - Prob. 15PACh. 5 - Prob. 16PA
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