In testing three different rubber compounds, a tire manufacturer finds the tread life of tires made from each to be as shown below. At the 0.05 level, could the three compounds deliver the same median tread life?
|
Design 1:
|
34
|
38
|
33
|
30
|
30 thousand miles
|
|
Design 2:
|
46
|
43
|
39
|
46
|
36
|
|
Design 3:
|
48
|
39
|
33
|
35
|
41
|