Levi-Strauss Co manufactures clothing. The quality control department measures weekly value of different suppliers for the percentage difference of wast between the layout on the computer and the actual waste when the clothing is made ( called run - up). The date is in table #11.3.3, and there are some negative values because sometimes the supplier is able to layout the pattern better than the computer ("Waste run - up,"2013). Do the date show that there is a difference between some of the suppliers? Test at the 1% level.

Table #11.3.3: Run - ups for Different Plants Making Levi Strauss 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 8.2

-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