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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.)

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