A textile manufacturer wants to set up a control chart for irregularities (eg, oil stains, shop soll, loose threads, and tears) per 100 square yards of carpet. The following data were collected from a sample of twenty 100-square-yard pieces of carpet: Sample 2 3 4 S Irregularities 13 9 7 11 4 Sample 7 8 9 10 Irregularities 10 5 10 7 18 Sample Irregularities 11 16 12 13 14 15 a. Using these data, set up a c-chart with 3 The UCL equals and the LCL, equals (Enter your responses rounded to two decimal places) 11 18 16 15 Sample Irregularities 16 15 17 12 18 5 19 20 6 4

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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A textile manufacturer wants to set up a control chart for irregularities (eg, oil stains, shop soll, loose threads, and tears) per 100 square yards of carpet. The following data were collected from a
sample of twenty 100-square-yard pieces of carpet:
Sample
2
3
4
S
Irregularities
13
9
7
11
4
Sample
7
8
9
10
Irregularities
10
5
10
7
18
Sample
11
a. Using these data, set up a c-chart with z
3.
The UCL equals and the LCL equals (Enter your responses rounded to two decimal places)
12
13
14
15
Irregularities
16
11
18
16
15
Sample Irregularities
16
15
17
12
18
6
19
6
20
4
Transcribed Image Text:A textile manufacturer wants to set up a control chart for irregularities (eg, oil stains, shop soll, loose threads, and tears) per 100 square yards of carpet. The following data were collected from a sample of twenty 100-square-yard pieces of carpet: Sample 2 3 4 S Irregularities 13 9 7 11 4 Sample 7 8 9 10 Irregularities 10 5 10 7 18 Sample 11 a. Using these data, set up a c-chart with z 3. The UCL equals and the LCL equals (Enter your responses rounded to two decimal places) 12 13 14 15 Irregularities 16 11 18 16 15 Sample Irregularities 16 15 17 12 18 6 19 6 20 4
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