The Goodman Tire and Rubber Company periodically tests its tires for tread wear under simulated road conditions. To study and control the manufacturing process, 20 samples, each containing three radial tires, were chosen from different shifts over several days of operation, with the following results. Tread wear measurements are in hundredths of an inch. Sample Tread Wear (hundredths of inch) 6 1 31 42 28 2 26 18 35 3. 25 30 34 4 17 25 21 5 38 29 35 6 41 42 36 7 21 17 29 8 32 26 28 9 41 34 33 10 10 29 17 30 11 26 31 40 12 12 23 25 13 17 24 32 14 43 35 17 15 18 25 29 16 30 42 31 17 28 86 32 18 40 10 29 31 19 18 29 28 20 22 34 26 Assuming that these data were collected when the manufacturing process was believed to be operating in control, develop the R chart. Compute the upper and lower control limits for the R chart. (Round your answers to two decimal places.) UCL= LCL= m fo
The Goodman Tire and Rubber Company periodically tests its tires for tread wear under simulated road conditions. To study and control the manufacturing process, 20 samples, each containing three radial tires, were chosen from different shifts over several days of operation, with the following results. Tread wear measurements are in hundredths of an inch. Sample Tread Wear (hundredths of inch) 6 1 31 42 28 2 26 18 35 3. 25 30 34 4 17 25 21 5 38 29 35 6 41 42 36 7 21 17 29 8 32 26 28 9 41 34 33 10 10 29 17 30 11 26 31 40 12 12 23 25 13 17 24 32 14 43 35 17 15 18 25 29 16 30 42 31 17 28 86 32 18 40 10 29 31 19 18 29 28 20 22 34 26 Assuming that these data were collected when the manufacturing process was believed to be operating in control, develop the R chart. Compute the upper and lower control limits for the R chart. (Round your answers to two decimal places.) UCL= LCL= m fo
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Problem 1P
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Transcribed Image Text:The Goodman Tire and Rubber Company periodically tests its tires for tread wear under simulated road conditions. To study and control
the manufacturing process, 20 samples, each containing three radial tires, were chosen from different shifts over several days of
operation, with the following results. Tread wear measurements are in hundredths of an inch.
Sample
Tread Wear (hundredths of inch)
6
1
31
42
28
2
26
18
35
3.
25
30
34
4
17
25
21
5
38
29
35
6
41
42
36
7
21
17
29
8
32
26
28
9
41
34
33
10
10
29
17
30
11
26
31
40
12
12
23
25
13
17
24
32
14
43
35
17
15
18
25
29
16
30
42
31
17
28
86
32
18
40
10
29
31
19
18
29
28
20
22
34
26
Assuming that these data were collected when the manufacturing process was believed to be operating in control, develop the R chart.
Compute the upper and lower control limits for the R chart. (Round your answers to two decimal places.)
UCL=
LCL=
m
fo
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