OPERATIONS MANAGEMENT IN THE SUPPLY CHAIN: DECISIONS & CASES (Mcgraw-hill Series Operations and Decision Sciences)
7th Edition
ISBN: 9780077835439
Author: Roger G Schroeder, M. Johnny Rungtusanatham, Susan Meyer Goldstein
Publisher: McGraw-Hill Education
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Question
Chapter 9, Problem 11P
a)
Summary Introduction
To determine: The CL and control limits for the X bar and R chart.
b)
Summary Introduction
To determine: The samples that are out of control.
c)
Summary Introduction
To determine: If the process is stable enough to begin the use data and collect samples,
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Students have asked these similar questions
A quality analyst wants to construct a sample mean chart for controlling a packaging
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Weight
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22
23
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Tuesday
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Wednesday
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Thursday
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What is the average of sample ranges in the random samples? Must compute each
value in 2 dec pl.
Cartons of Plaster are supposed to weigh exactly 32 ounces. Inspectors want to develop process control charts. They
take five samples of six (6) boxes each and weigh them. Sample means (X-bar) are: 33.8, 34.6, 34.7, 34.1, and 34.2
respectively. Also, the corresponding ranges are: 1.1,0.3, 0.4. 0.7, and 0.3, respectively. The lower and upper control
limits of the xbar-chart are
respectively
O a.
None is correct
O b. 30.11 and 40.15
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O d. 33.12 and 34.12
O e.
37.01 and 39.23
Cartons of Plaster are supposed to weigh exactly 32 ounces. Inspectors want to develop process control charts. They take
five samples of six (4) boxes each and weigh them. Sample means (X-bar) are: 33.8, 34.6, 34.7, 34.1, and 34.2 respectively.
Also, the corresponding ranges are: 1.1,0.3,0.4,0.7, and O.3, respectively. The lower and upper control limits of the R-
chart are
respectively
O a. O and 0.15
Ob. 0.03 and 1.28
Oc. O and 1.28
O d. 0.01 and 1.13
O e. None is correct
Chapter 9 Solutions
OPERATIONS MANAGEMENT IN THE SUPPLY CHAIN: DECISIONS & CASES (Mcgraw-hill Series Operations and Decision Sciences)
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