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Description: 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

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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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	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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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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