A textile manufacturer wants to set up a control chart for irregularities? (e.g., oil? stains, shop?...

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A textile manufacturer wants to set up a control chart forirregularities? (e.g., oil? stains, shop? soil, loose? threads,and? tears) per 100 square yards of carpet. The following data werecollected from a sample of twenty? 100-square-yard pieces of?carpet:

????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????  

Sample

Irregularities

Sample

Irregularities

Sample

Irregularities

Sample

Irregularities

1

1111

6

55

11

66

16

55

2

77

7

1616

12

1010

17

1616

3

1212

8

1212

13

99

18

99

4

1717

9

1414

14

66

19

55

5

1515

10

55

15

99

20

1616

a. Using these? data, set up a? c-chart with

zequals=33.

The

UCL Subscript cUCLc

equals

nothing

and the

LCL Subscript cLCLc

equals

nothing.

?(Enter your responses rounded to two decimal? places.)

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