Question: I need some help with this. A study was conducted to measure the effectiveness of hypnotism in reducing pain. The measurements are centimeters on a

I need some help with this.

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 6.9 6.6 9.8 6.8 9.5 6.2 4.7 1.2 After 6.6 2.3 75 8 1 84 6.8 3.8 2.5 Construct a 95% confidence interval for the mean of the "before - after" differences.

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