Pain after surgery: In a random sample of 57 patients undergoing a standard surgical procedure, 16 required medication for postoperative pain. In a random sample of 80 patients undergoing a new procedure, only 13 required pain medication. Part: 0 / 2 Part 1 of 2 (a) Construct an 80% confidence interval for the difference in the proportions of patients needing pain medication between the old and new procedures. Let p, 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. An 80% confidence interval for the difference in the proportions of patients needing pain medication between the old and new procedures is < P; - P2 < : W DEC ok Air

In a survey of 1076 adults, a poll asked, "Are you worried or not worried about having enough money for retirement?" Of the 1076 surveyed, 551 stated that they were worried about having enough money for refirement. Construcd a 99% confidence interval for the proportion of adults who are worried about having enough money for retirement. A 99% confidence interval for the proportion of adults who are worried about having enough money for retirement is ( (Use ascending order. Round to four decimal places as needed) Question Help Enter your answer in each of the answer boxes. P Type here to search 4 00 ENG 414/2021 DELL F12 VYZ Priscr Delehes Seers F10 FO F7 F2 FS Esc F1 Fa SAL 40 BackspuMA %23 5S 13 T R Tab 10 Enter K D F S A S Caps Lock Shift Ctri Alt Alt Fr Ctri

A random sample of high school seniors were asked whether they were applying for college. The resulting confidence interval for the proportion of students applying for college is (0.65,0.69). What is the margin of error?