A clinical trial is conducted comparing a new pain reliever for arthritis to a p

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 placebo. 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

a. Generate a 95% confidence interval for the proportion of patients on the new medication who report pain relief.
b. Generate a 95 % confidence interval for the difference in proportions of patients who report pain relief.

Explanation / Answer

(a) sample proportion: 65/240 = 0.27 standard error = E = 1.96*sqrt[0.27*0.73/240] = 0.056 95% CI: 0.27-0.056

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.