Question
A clinical trial is conducted comparing a new pain reliever for arthritis to a placebo. Participants are randomly assigned to receive the new treatment or
A clinical trial 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 outcome is pain relief within 30 minutes. The data are shown below.
Pain Relief | No Pain Relief | |
New Medication | 44 | 76 |
Placebo | 21 | 99 |
Is there a significant difference in the proportions of patients reporting pain relief? Run the test at a 5% level of significance.
Reject H0if Z< ________ or if Z>________
alpha= ________
=________
=________
= ________
Z = ________
Based on comparing the computed z to the rejection level z which of the following is (are) true?
- A) We have statistically significant evidence at .05 to show that H0is false.
- B) We have statistically significant evidence at .05 to show that there a significant difference in the proportions of patients reporting pain relief.
- C) Wedo nothave statistically significant evidence at .05 to show there a significant difference in the proportions of patients reporting pain relief.
- a and b
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