4. A clinician is conducted comparing a new pain reliever for arthritis to a placebo. Participants are randomly assigned to receive the new treatment or a placebo, and the outcomes is pain relief within 30 minutes. The data are shown table 7-8. Is there a significant difference in the proportion of patients reporting pain relief? Run the test at 5% level of significance. Pain Relief No Pain Relief New Medication 44 76 Placebo 21 96