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Levi-Strauss Co manufactures clothing. The quality control department measures weekly values of different suppliers for the percentage...

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Statistics

Levi-Strauss Co manufactures clothing. The quality controldepartment measures weekly values of different suppliers for thepercentage difference of waste between the layout on the computerand the actual waste when the clothing is made (called run-up).

The data is in Table #11.3.3, below, and there are some negativevalues because sometimes the supplier is able to layout the patternbetter than the computer (Waste run up, 2013).(11.3.2)

Do the data show that there is a difference between some of thesuppliers?  Test at the 1% level.

Show work without Excel or calculator

Table #11.3.3: Run-ups for Different Plants Making LeviStrauss Clothing

Plant 1

Plant 2

Plant 3

Plant 4

Plant 5

1.2

16.4

12.1

11.5

24

10.1

-6

9.7

10.2

-3.7

-2

-11.6

7.4

3.8

8.2

1.5

-1.3

-2.1

8.3

9.2

-3

4

10.1

6.6

-9.3

-0.7

17

4.7

10.2

8

3.2

3.8

4.6

8.8

15.8

2.7

4.3

3.9

2.7

22.3

-3.2

10.4

3.6

5.1

3.1

-1.7

4.2

9.6

11.2

16.8

2.4

8.5

9.8

5.9

11.3

0.3

6.3

6.5

13

12.3

3.5

9

5.7

6.8

16.9

-0.8

7.1

5.1

14.5

19.4

4.3

3.4

5.2

2.8

19.7

-0.8

7.3

13

3

-3.9

7.1

42.7

7.6

0.9

3.4

1.4

70.2

1.5

0.7

3

8.5

2.4

6

1.3

2.9

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