A vice president for marketing recruits 20 college graduates for the management training. The 20 individuals are randomly alloacted, 10 each, to one of two groups. A "traditional" techniques of training (T) is employed in one group, and an "experimental" technique (E) is employed in the other. After the graduates spend 6 months on the job, the vice president ranks them on the basis of their performance, from 1 (worst) to 20 (best), with following results:
|
T
|
1
|
2
|
3
|
5
|
9
|
10
|
12
|
13
|
14
|
15
|
|
E
|
4
|
6
|
7
|
8
|
11
|
16
|
17
|
18
|
19
|
20
|
Is there evidence of a difference in median performance between two techniques? (Use α = 0.05.)