EBK PRODUCTION AND OPERATIONS ANALYSIS
7th Edition
ISBN: 9781478628385
Author: Olsen
Publisher: WAVELAND PRESS (ECONTENT)
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Question
Chapter 13.6, Problem 22P
Summary Introduction
Interpretation:
The general replacement age
Concept Introduction:
The objective of optimal policy is to determine the value of ‘t’that minimizes the total cost of maintenance and replacement over an infinite horizon. A replacement cycle is the time between successive replacements.
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Determine the optimum preventive maintenance frequency for each of the pieces of equipment if breakdown time is normally
distributed: (Round "Probability Ratio" to 4 decimal places, and all other answers to 2 decimal places. Negative values should be
indicated by a minus sign.)
Use Table.
Equipment.
A201
B400
C850
Equipment
A201
B400
CB50
Equipment
Average Time (days)
between Breakdowns
A201
B400
C850
20
30
45
Preventive
Maintenance Cost
Click here for the Excel Data File:
$330
$230
$580
Probability Ratio
Standard
Deviation
3
Breakdown
Cont
$2,230
$3,530
$4,825
Interval (days)
Consider a product that is "settled in." Its MTBF distribution has been found to be normal with a mean of 10,000 hours and a standard deviation of 100 hours. Answer the following questions:
(a) Calculate the probability of a breakdown before 8,000 hours?
(b) Calculate the probability of a breakdown before 9,000 hours?
(c) Would you prefer a policy of “preventive maintenance” or a policy of “breakdown maintenance” on this product? Explain your choice.
17-
According to a business plan for a startup, the break-even point was calculated at 12,000 units of sales. However, after launch, the average variable cost for the product has gone up. Which of the following is the effect on break-even point?
Group of answer choices
the effect on break-even point cannot be determined without more information
the break-even point will remain the same
the break-even point will be higher than 12,000 units
the break-even point will be lower than 12,000 units
18-
According to a business plan for a startup, the break-even point was calculated at 12,000 units of sales. However, after launch, the unit price for the product had to be lowered. Which of the following is the effect on break-even point?
Group of answer choices
the break-even point will remain the same
the break-even point will be lower than 12,000 units
the effect on break-even point cannot be determined without more information
the break-even point will be higher than 12,000…
Chapter 13 Solutions
EBK PRODUCTION AND OPERATIONS ANALYSIS
Ch. 13.1 - Prob. 3PCh. 13.1 - Prob. 4PCh. 13.1 - Prob. 5PCh. 13.1 - Prob. 6PCh. 13.2 - Prob. 7PCh. 13.2 - Prob. 9PCh. 13.3 - Prob. 13PCh. 13.3 - Prob. 14PCh. 13.4 - Prob. 15PCh. 13.4 - Prob. 16P
Ch. 13.4 - Prob. 17PCh. 13.4 - Prob. 18PCh. 13.4 - Prob. 19PCh. 13.4 - Prob. 20PCh. 13.6 - Prob. 21PCh. 13.6 - Prob. 22PCh. 13.6 - Prob. 23PCh. 13.6 - Prob. 24PCh. 13.6 - Prob. 25PCh. 13.7 - Prob. 26PCh. 13.7 - Prob. 27PCh. 13.7 - Prob. 28PCh. 13.7 - Prob. 30PCh. 13.7 - Prob. 31PCh. 13.7 - Prob. 32PCh. 13.7 - Prob. 33PCh. 13.7 - Prob. 34PCh. 13.8 - Prob. 35PCh. 13.8 - Prob. 36PCh. 13.8 - Prob. 37PCh. 13.8 - Prob. 38PCh. 13.8 - Prob. 39PCh. 13.8 - Prob. 40PCh. 13.8 - Prob. 41PCh. 13 - Prob. 42APCh. 13 - Prob. 43APCh. 13 - Prob. 44APCh. 13 - Prob. 45APCh. 13 - Prob. 46APCh. 13 - Prob. 48APCh. 13 - Prob. 49APCh. 13 - Prob. 51APCh. 13 - Prob. 52APCh. 13 - Prob. 53AP
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