Give specific null and alternative hypotheses

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The coded values for a measure of brightness in paper (light reflectivity), prepared by two different processes, are as shown in the accompanying table for samples of size 9 drawn randomly from each of the two processes. Do the data present sufficient evidence to indicate a difference in locations of brightness measurements for the two processes? Give the attained significance level.

A                 B

6.1

9.1

9.2

8.2

8.7

8.6

8.9

6.9

7.6

7.5

7.1

7.9

9.5

8.3

8.3

7.8

9.0

8.9

a Use the Mann-Whitney U test.

b Use Student's t test.

c Give specific null and alternative hypotheses, along with any assumptions, for the tests used in parts (a) and (b).

Reference no: EM131029400

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