Q. 10A and B

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 8.9 4.8 9.0 11.6 9.8 10.6 8.7 6.1 After 6.1 2.2 7.6 8.4 82 6.9 3.9 2.8 Construct a 95% confidence interval for the mean of the "before - after" differences. Ha (Round to two decimal places as needed.)