The content of a particular constituent in two different brands of a drug, measured in milligrams, was found to be as shown below. Test the hypothesis that the mean contents of the two brands are equal against the alternative that they are unequal.
Use the Wilcoxon Rank-Sum Test with a 0.05 level of significance.
|
Brand A
|
Brand B
|
|
2.1
|
4.1
|
|
4
|
0.6
|
|
6.3
|
3.1
|
|
5.4
|
2.5
|
|
4.8
|
4
|
|
3.7
|
6.2
|
|
6.1
|
1.6
|
|
3.3
|
2.2
|
|
1.9
|
|
5.4
|