(a) Plot these new observations on the control chart. What conclusions can you draw about process stability? (b) Use all 25 observations to revise the control lim- its for the i and R charts. What conclusions can you draw now about the process?
(a) Plot these new observations on the control chart. What conclusions can you draw about process stability? (b) Use all 25 observations to revise the control lim- its for the i and R charts. What conclusions can you draw now about the process?
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Solve Exc.6.42-43 given at Pic.2. Explain the results with a plain expression, support with graphs.
Transcribed Image Text:Specifications on a cigar lighter detent are 0.3220
and 0.3200 in. Samples of size 5 are taken every
45 min with the results shown in Table 6E.18 (mea-
sured as deviations from 0.3210 in 0.0001 in.).
1 TABLE 6E.18
New Data for Exercise 6.43
Data for Exercise 6.42
Continuation of Exercise 6.42. Reconsider the data
Sample
Sample
Number
from Exercise 6.42 and establish I and R charts with
X1
appropriate trial control limits. Revise these trial lim-
its as necessary to produce a set of control charts for
monitoring future production. Suppose that the new
Number
X2
X3
X4
X5
16
2
10
9.
6
1
1
9
6
9
17
1
9.
5
9
4
9
4
3
3
18
9
8
2.
data in Table 6E.19 are observed.
(a) Plot these new observations on the control chart.
What conclusions can you draw about process
stability?
(b) Use all 25 observations to revise the control lim-
9
3
2
19
-3
1
4
1
1
1
20
2
10
1
-3
-1
-4
21
-5
4
6
-1
6.
-7
2
2
22
-5
4
7
-3
-1
-1
-2
23
10
3
1
its for the I and R charts. What conclusions can
8
-2
-3
-3
-2
24
-1
-3
you draw now about the process?
9
2
-1
-3
25
-1
-2
10
-1
-1
Please explain the results with a plain expression, support with graphs.
11
-3
-2
-1
-1
2
12
-16
-4
-1
13
-6
-3
-8
14
-3
-5
15
-1
-1
-1
-2
-1
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