Practical Management Science
Practical Management Science
6th Edition
ISBN: 9781337406659
Author: WINSTON, Wayne L.
Publisher: Cengage,
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Question
Sampling
4
pieces of​ precision-cut wire​ (to be used in computer​ assembly) every hour for the past 24 hours has produced the following​ results:
                                                                                                                                                         
Hour
x
R
Hour
x
R
Hour
x
R
Hour
x
R
1
3.15​"
0.71​"
7
3.15​"
0.58​"
13
3.21​"
0.80​"
19
3.31​"
1.61​"
2
3.20
1.23
8
2.75
1.18
14
2.83
1.31
20
2.79
1.09
3
3.12
1.38
9
3.02
0.71
15
3.02
1.01
21
2.65
1.13
4
3.39
1.31
10
2.75
1.38
16
2.94
0.50
22
3.38
0.51
5
3.07
1.17
11
2.93
1.22
17
2.86
1.43
23
2.94
1.63
6
2.76
0.37
12
2.87
0.40
18
2.64
1.29
24
2.64
0.92
 
Based on the sampling​ done,
the
control limits for ​3-sigma
x
chart are ​(round all intermediate calculations to three decimal places before proceeding with further
​calculations)​:
Part 2
Upper Control Limit
​(UCLx​)
​=
enter your response here
inches ​(round your response to three decimals)

 
Part 3
Lower Control Limit
​(LCLx​)
​=
inches ​(round your response to three decimal​ places).
Part 4
Based on the
x​-chart,
the wire cutting process has been
 
 
.
Part 5
The control limits for the
​3-sigma
​ R-chart are ​(round all intermediate calculations to three decimal places before proceeding with further
​calculations)​:
Part 6
Upper Control Limit
​(UCLR​)
​=
inches ​(round your response to three decimal​ places).
Part 7
Lower Control Limit
​(LCLR​)
​=
inches ​(round your response to three decimal​ places).
Part 8
Based on the​ R-chart, the wire cutting process has been
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