Pain after surgery: In a random sample of 51 patients undergoing a standard surgical procedure, 22 required medication for postoperative pain. In a random sample of 88 patients undergoing a new procedure, only 16 required pain medication. Part: 0 / 2 Part 1 of 2 (a) Construct a 99.5% confidence interval for the difference in the proportions of patients needing pain medication between the old and new procedures. Let p₁ denote the proportion of patients who had the old procedure needing pain medication. Use tables to find the critical value and round the answer to at least three decimal places. A 99.5% confidence interval for the difference in the proportions of patients needing pain medication between the old and X new procedures is

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