Give specific null and alternative hypotheses

Reference no: EM131029400

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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