MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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this problem but rounded to 3 decimals

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 10.4
After
6.6
4.2
2.5
7.7
7.1
11.6
8.5
8.6
8.5
9.1
6.3
1.9
3.7
6.5
2.6
□
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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 10.4 After 6.6 4.2 2.5 7.7 7.1 11.6 8.5 8.6 8.5 9.1 6.3 1.9 3.7 6.5 2.6 □
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