Homework: ... Question 57, 9.3.15-T HW Score: 46.69%, 73.31 of 157 points Part 1 of 2 O Points: 0 of 3 Save A study was conducted to measure the effectiveness of hypnotism in reducing pain. The measurements are centimeters on a pain scale before and after hypnosis. Assume that the paired sample data are simple random samples and that the differences have a distribution that is approximately normal Construct a 95% confidence interval for the mean of the "before - after" differences. Does hypnotism appear to be effective in reducing pain? Before 7.5 3.3 11 1 10.2 11.6 5 5 1.7 2.7 After 6.3 2.4 7.3 8.5 8.5 6.3 3.6 2.8 Construct a 95% confidence interval for the mean of the "before - after" differences