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A study was conducted to measure the effectiveness of hypnotism in reducing pain The measurements...

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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 After 9 3 6 8 0 7 2 2 11 3 7 1 Construct a 95 confidence interval for the mean of the before after differences Hd Round to two decimal places as needed Hd Does hypnotism appear to be effective in reducing pain OA Yes because the confidence interval includes zero OB No because the confidence interval does not include and is entirely greater than zero OC Yes because the confidence interval does not include and is entirely greater than zero OD No because the confidence interval includes zero 8 4 8 9 6 5 8 1 6 9 6 8 2 8 3 2 2 3 2 6 n

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