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This Question: 1 pt 14 of 14 (13 complete) This Test: 14 pts possible Question Help 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. score 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? score Before 7.1 2.2 11.7 7.1 9.8 4.7 7.8 3.6 After 6.9 2.5 7.1 8.6 8.5 6.3 3.9 2.7 score Construct a 95% confidence interval for the mean of the "before - after" differences. d