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 9.3 6.8 6.9 10.3 7.3 9.2 3.5 1.1 After 6.5 2.1 7.4 8.5 8.8 6.6 3.3 2.8 Construct a 95% confidence interval for the mean of the "before−after" differences. <μd< (Round to two decimal places as needed.)
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 9.3 6.8 6.9 10.3 7.3 9.2 3.5 1.1 After 6.5 2.1 7.4 8.5 8.8 6.6 3.3 2.8 Construct a 95% confidence interval for the mean of the "before−after" differences. <μd< (Round to two decimal places as needed.)
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Author:Amos Gilat
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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
|
9.3
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6.8
|
6.9
|
10.3
|
7.3
|
9.2
|
3.5
|
1.1
|
|
---|---|---|---|---|---|---|---|---|---|
After
|
6.5
|
2.1
|
7.4
|
8.5
|
8.8
|
6.6
|
3.3
|
2.8
|
Construct a 95% confidence interval for the mean of the
"before−after"
differences.Expert Solution
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A study was conducted to measure the e ectiveness 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 di erences
have a distribution that is approximately normal. Use a 0:10 signi cance level to test
the claim that the the hypnotism is e ective in reducing pain.
test statistic = ?1:868431982; p-value = 0:0519584292
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