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 6.0 24 11.3 10.2 11.9 9.8 5.8 4.9 After 6.2 2.1 7.6 8.8 8.2 6.1 3.4 2.3 Construct a 95% confidence interval for the mean of the "before - after" differences.
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 6.0 24 11.3 10.2 11.9 9.8 5.8 4.9 After 6.2 2.1 7.6 8.8 8.2 6.1 3.4 2.3 Construct a 95% confidence interval for the mean of the "before - after" differences.
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Transcribed Image Text: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
6.0
2.4
11.3
10.2
11.9
9.8
5.8
4.9
After
6.2
2.1
7.6
8.8
8.2
6.1
3.4
2.3
Construct a 95% confidence interval for the mean of the "before - after" differences.
<Hd<(Round to two decimal places as needed.)
Does hypnotism appear to be effective in reducing pain?
O A. No, because the confidence interval does not include zero and is entirely greater than zero.
B. Yes, because the confidence interval includes zero.
C. No, because the confidence interval includes zero.
O D. Yes, because the confidence interval does not include zero and is entirely greater than zero.
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