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 nterval for the mean of the "before - after" differences. Does hypnotism appear to be effective in reducing pain? Before 8.4 5.5 12.1 7.3 7.0 9.2 3.0 1.4 After 6.8 2.2 7.6 8.1 8.1 6.4 3.4 2.3 Construct a 95% confidence interval for the mean of the "before - after" differences.
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 nterval for the mean of the "before - after" differences. Does hypnotism appear to be effective in reducing pain? Before 8.4 5.5 12.1 7.3 7.0 9.2 3.0 1.4 After 6.8 2.2 7.6 8.1 8.1 6.4 3.4 2.3 Construct a 95% confidence interval for the mean of the "before - after" differences.
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Round to two decimal places
![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
8.4
5.5
12.1
7.3
7.0
9.2
3.0
1.4
After
6.8
2.2
7.6
8.1
8.1
6.4
3.4
2.3
Construct a 95% confidence interval for the mean of the "before - after" differences.
< Ha < (Round to two decimal places as needed.)
Does hypnotism appear to be effective in reducing pain?
O A. No, because the confidence interval includes zero.
O B. Yes, because the confidence interval includes zero.
O C. Yes, because the confidence interval does not include and is entirely greater than zero.
O D. No, because the confidence interval does not include and is entirely greater than zero.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9f6b24cc-bd5a-411c-8665-637e9984c151%2F42b69b82-61e8-45b0-8ab7-b3f8393ca07b%2F6nngs1b_processed.jpeg&w=3840&q=75)
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
8.4
5.5
12.1
7.3
7.0
9.2
3.0
1.4
After
6.8
2.2
7.6
8.1
8.1
6.4
3.4
2.3
Construct a 95% confidence interval for the mean of the "before - after" differences.
< Ha < (Round to two decimal places as needed.)
Does hypnotism appear to be effective in reducing pain?
O A. No, because the confidence interval includes zero.
O B. Yes, because the confidence interval includes zero.
O C. Yes, because the confidence interval does not include and is entirely greater than zero.
O D. No, because the confidence interval does not include and is entirely greater than zero.
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