A researcher is conducting a study on the palliative care of patients at a specific facility to determine how their chronic pain symptoms change after entering the palliative care environment. This study is aimed at determining the effectiveness of a standardized treatment protocol for the patients entering into the palliative care environment. To do this, the researcher is comparing the pain scores of individuals before treatment and after treatment. Set up a Wilcoxon signed-ranks test and interpret it at the alpha equals .05 level.

the numbers are as follows:

patient before tx. after tx

1. 9. 4

2. 10. 5

3. 7. 3

4. 8. 5

5. 6. 7

6. 9. 5

7. 6. 4

8. 7. 3

9. 9 4