Operations Management: Processes And Supply Chains (12th Global Edition) - Does Not Include Mylab Operations Management
12th Edition
ISBN: 9780134890357
Author: Lee J. Krajewski, Manoj K. Malhotra
Publisher: Pearson Global Edition
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Question
Chapter 3, Problem 3P
(a)
Summary Introduction
Interpretation: R and
Concept Introduction:
The R chart is used to observe the deviation of a process on the basis of samples taken from the process at a given timeframe. X-bar charts are used to observe the arithmetic means of consecutive samples of constant size, n.
(b)
Summary Introduction
Interpretation: Whether the process is in control or not.
Concept Introduction: Calculation from part a has to be examined closely to determine whether the process is in control or not.
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Rosters Chicken advertises " lite" chicken with 30% fewer calories than standard chicken. When the process for "lite" chicken breast production is in control, the average chicken breast contains 420 calories, and the standard deviation in caloric content of the chicken breast population is 25 calories. Rosters wants to design an x-chart to monitor the caloric content of chicken breasts, where 25 chicken breasts would be chosen at random to form each sample.a) What are the lower and upper control limits for th.is chart if these limits are chosen to be four standard deviations from the target?b) What a re the limits with three standard deviations from the target?
The Pet-Pal Company produces delicious dog treats. Management wants the filling
process to be properly adjusted so that the process average weight per packet is 45
grams. To make sure that the process is in control, an inspector at the end of the
filling process periodically selects a random sample of 8 packets and weighs each
packet. The mean and range for each sample are then recorded. The results from the
last 5 samples are shown in the table below.
Sample
Mean
Range
1
42
2
22
4
47
7
3
49
45
44
43
8
6
50
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Chapter 3 Solutions
Operations Management: Processes And Supply Chains (12th Global Edition) - Does Not Include Mylab Operations Management
Ch. 3 - Should a very pricey handcrafted object of beauty...Ch. 3 - Prob. 2DQCh. 3 - Prob. 3DQCh. 3 - Prob. 1PCh. 3 - Prob. 2PCh. 3 - Prob. 3PCh. 3 - Prob. 4PCh. 3 - Prob. 5PCh. 3 - Prob. 6PCh. 3 - Prob. 7P
Ch. 3 - Prob. 8PCh. 3 - Prob. 9PCh. 3 - Prob. 10PCh. 3 - Prob. 11PCh. 3 - Prob. 12PCh. 3 - Prob. 13PCh. 3 - Prob. 14PCh. 3 - Prob. 15PCh. 3 - Prob. 16PCh. 3 - Prob. 17PCh. 3 - Prob. 18PCh. 3 - Prob. 19PCh. 3 - Prob. 20PCh. 3 - Prob. 21PCh. 3 - Prob. 26PCh. 3 - Prob. 27PCh. 3 - Prob. 28PCh. 3 - Prob. 29PCh. 3 - Prob. 31PCh. 3 - Prob. 1AMECh. 3 - Prob. 2AMECh. 3 - Prob. 3AMECh. 3 - Prob. 4AMECh. 3 - Prob. 5AMECh. 3 - Prob. 1VCCh. 3 - Prob. 2VC
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