h 8 & 9 - Inferences for Two Question 11, *10.3.87 HW Score: 57.12%, 6.28 of 11 points Points: 0 of 1 Save Preliminary analyses indicate that you can consider the assumptions for using nonpooled t-procedures satisfied. Researchers obtained the following data on Dynamic the number of acute postoperative days in the hospital using the dynamic and static systems. Obtain a 90% confidence interval for the difference, py - p2, between the mean numbers of acute postoperative days in the hospital with the dynamic and static systems. (Note: X, = 7.17, s, = 1.40, x2 = 10.67, and Static $2 = 4.97) 2 The 90% confidence interval is from ]to (Round to three decimal places as needed.) 4