Practical Management Science
6th Edition
ISBN: 9781337406659
Author: WINSTON, Wayne L.
Publisher: Cengage,
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Question
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Determine X=�= and R¯¯¯�¯ .
Note: Round your answers to 3 decimal places.
2: -
Determine the UCL and LCL for a X−�− chart.
Note: Round your answers to 3 decimal places.
3: -
Determine the UCL and LCL for R-chart.
Note: Leave no cells blank - be certain to enter "0" wherever required. Round your answers to 3 decimal places.
4: -
What comments can you make about the process?
multiple choice
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Process is in statistical control
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Process is out of statistical control
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Transcribed Image Text:The following table contains the measurements of the key length dimension from a fuel injector. These samples of size five were taken
at one-hour intervals. Use three-sigma control limits. Use Exhibit 10.13.
SAMPLE NUMBER 1
1
2
3
0.486
2
0.481 0.486
0.485 0.505
0.487
OBSERVATIONS
3
4
5
0.492 0.517 0.475
0.527 0.491 0.528
0.513
0.487 0.524
4
0.481 0.505
0.468
5
0.467 0.503
0.512
6
0.468
0.493
0.502
7
0.485
0.507
0.486
8
0.532
0.504
0.485
9
0.493
0.505 0.515
10
0.492
0.507
11
0.491
0.512
12
0.484
0.441
13
0.529 0.495
14
0.482
15
0.492
16
0.461
17
18
0.521 0.512
0.491
19
0.505 0.552
0.486
0.486 0.486
0.468 0.479
0.491 0.508
0.479 0.507
0.480 0.483
0.507 0.499
0.509 0.517 0.481
0.469 0.490 0.496
0.521 0.507 0.525
0.491 0.518 0.507
0.497 0.507 0.491 0.503
0.511 0.483 0.517 0.506
0.502 0.480 0.478 0.525
0.471 0.474 0.514 0.477 0.491
0.475 0.480
0.481 0.489
20
0.502 0.482 0.481 0.507 0.507
a. Calculate the mean and range for the above samples.
Note: Do not round intermediate calculations. Round your answers to 3 decimal places.
Sample Number
Mean
Range
1
2
3
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