Question
8. A study was conducted to investigate the effectiveness of hypnotism in reducing pain. Results for...
8. A study was conducted to investigate the effectiveness of hypnotism in reducing pain. Results for randomly selected subjects are the following:
Subject A B C D E F G H
Before 6.6 6.5 9.0 10.3 11.3 8.1 6.3 11.6
After 6.8 2.4 7.4 8.5 8.1 6.1 3.4 2.0
The measurements are in centimeters on a pain scale. Higher values correspond to greater levels of pain. Perform a hypothesis test to determine if Hypnotism is effective in reducing pain.
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A study was conducted to measure the effectiveness of hypnotism in reducing pain. The measurements are...
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 minus−after" differences.
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A study was conducted to measure the effectiveness of hypnotism in reducing pain. The measurements are...
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
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