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 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 e reducing pain? Before 8.2 2.0 8.9 11.2 10.9 6.4 1.9 2.1 After 6.6 2.7 7.8 8.3 8.2 6.7 3.2 2.8 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 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 e reducing pain? Before 8.2 2.0 8.9 11.2 10.9 6.4 1.9 2.1 After 6.6 2.7 7.8 8.3 8.2 6.7 3.2 2.8 Construct a 95% confidence interval for the mean of the "before - after" differences.
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ISBN:9781119256830
Author:Amos Gilat
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Transcribed Image Text:random samples and that the differences have
reducing pain?
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 s
distribution that is approximately normal, Construct a 95% confidence interval for the mean of the "before - after" differences. Does hypnotism appear to be e
Before
8.2
2.0
8.9
11.2
10.9
6.4
1.9
2.1
After
6.6
2.7
7.8
8.3
82
6.7
3.2
2.8
Construct a 95% confidence interval for (the mean of the "before - after" differences.
<Hg< (Round to two decimal places as needed.)
Does hypnotism appear to be effective in reducing pain?
O A. No, because the confidence interval includes zero.
O B. No, because the confidence interval does not include and is entirely greater than zero.
O C. Yes, because the confidence interval includes zero.
O D. Yes, because the confidence interval does not include and is entirely greater than zero.
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