The table below shows the time in months between occurrences of safety violations for three operators, "A," "B," and "C," working in a toll manufacturing facility.
|
A
|
1.31
|
0.15
|
3.02
|
3.17
|
4.84
|
0.71
|
0.70
|
1.41
|
2.68
|
0.68
|
|
B
|
1.94
|
3.21
|
2.91
|
1.66
|
1.51
|
0.30
|
0.05
|
1.62
|
6.75
|
1.29
|
|
C
|
0.79
|
1.22
|
0.65
|
3.90
|
0.18
|
0.57
|
7.26
|
0.43
|
0.96
|
3.76
|
The data is clearly not normally distributed since the phenomenon in question is typical of an exponential random variable. Carry about an appropriate test to val- idate the hypothesis that there is a di?erence between the safety performance of these operators. Justify your test choice and interpret your results adequately.