Question

The table below shows the hours of relief provided by two analgesic drugs in 12 patients suffering from arthritis. Is there any evidence that one drug provides longer relief than the other? Use Wilcoxon Signed-RankTest.

Case    A         B

1          2.0       3.5

2          14.9     16.7

3          3.6       5.7

4          6.6       6.0

5          2.6       2.9

6          2.3       3.8

7          2.6       2.4

8          2.0       4.0

9          7.3       9.9

10        6.8       9.1

11        3.4       3.3

12        8.5       20.9

13 9.2 14.7

Please explain where you get the W crit . I know the W stats is the min of the the positives so in this case 7 but I dont know how to get the critical stat please show all work

Answer 1

Using online statistics calculator,

A means treatment 1

B means treatment 2