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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 8.5 4.5 10.7 10.8 12.7 6.9 3.6 6.1 After 6.8 2.4 7.4 8.1 8.5 6.3 3.1 2.6 Construct a 95% confidence interval for the mean of the "before - after" differences. (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 8.5 4.5 10.7 10.8 12.7 6.9 3.6 6.1 After 6.8 2.4 7.4 8.1 8.5 6.3 3.1 2.6 Construct a 95% confidence interval for the mean of the "before - after" differences. (Round to two decimal places as needed.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
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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 8.5 4.5 10.7 10.8 12.7 6.9 3.6 6.1 After 6.8 2.4 7.4 8.1 8.5 6.3 3.1 2.6 Construct a 95% confidence interval for the mean of the "before - after" differences. (Round to two decimal places as needed.)
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 8.5 4.5 10.7 10.8 12.7 6.9 3.6 6.1 After 6.8 2.4 7.4 8.1 8.5 6.3 3.1 2.6 Construct a 95% confidence interval for the mean of the "before - after" differences. (Round to two decimal places as needed.)
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