Non parametric test using kruskal wallis

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Reference no: EM1313437

The problem set scores, prior to the mid-term exam, is shown below for four students selected at random. The distribution for the scores is unknown; therefore any analysis must be nonparametric. Using a 1% level of significance, can the hypothesis that the distributions for the student's scores are identical be accepted?

 

1

2

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moe

9

9

10

7

7

9

10

10

9

10

10

10

6

8

9

larry  

9

10

8

9

9

10

8

10

10

10

0

9

9

10

9

curly  

0

8

10

10

9

10

9

9

0

7

9

9

8

0

9

shimp 

9

10

9

9

10

9

0

9

9

9

9

0

9

9

9

Which of the statements below best describes yoru findings?

a) W=1.6856, the hypothesis that the distributions are identical cannot be rejected.

b) W=2.6330, the hypothesis that the distributions are identical cannot be rejected.

c) W=6.2510, the hypothesis that the distributions are identical cannot be rejected.

d) W=8.9020, the hypothesis that the distributions are identical cannot be rejected.

e) W = 8.9020, the hypothesis that the distributions are identical can be rejected.

Reference no: EM1313437

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