We conduct T-test for Paired Samples as :
Hence, we conclude that sensory measurements are ,on average, lower after hypnotism which implies that hypnotism is effective in reducing the pain at 5% level of significance.
(10 pts) 2. A study was conducted to investigate the effectiveness of hypnotism in reducing pain....
5. Effectiveness of Hypnotism in Reducing Back Pain A study was conducted to investigate the effectiveness of hypnotism in reducing back pain. The values are before and after hypnosis and are measurements given on a pain scale. [Journal of Abnormal Psychology, Vol 96, No. 1, Price & Barber] [3 decimal places] 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 Use...
A study was conducted to investigate the effectiveness of hypnotism in reducing pain. Results for randomly selected subjects are given in the following table. Use a-0.05 Subjects | A | B | C | D | E | F | G Before6.6 6.5 9.0 10.3 11.3 8.1 6.3 11.6 After 6.8 2.4 7.48.5 8.1 6.1 3.42.0 a) Identify the hypotheses, (Ho and H b) Find the margin of error c) Construct a 95% confidence interval estimate of the mean "before-after"...
4. A study was conducted to investigate the effectiveness of hypnotism in reducing pain. Randomly selected subjects are measured for their pain level based on a pain scale both before and after hypnosis. The resulting data is given in the table below. Assuming normality, test at the 5% significance level to determine if the hypnotism appears to be effective in reducing pain. (17 points) Pain Level Subject 1 2 3 4 5 6 7 8 9 10 11 12 Before...
II. A study was conducted to investigate the effectiveness of hypnotism in reducing pain. Results for randomly selected subjects are given in the accompanying table. The values are before and after hypnosis; the measurements are in centimeters on a pain scale. At the 0.05 significance level, test the claim that the sensory measurements are lower after hypnotism. Assume that the differences is a random sample from a normal population. Subject A B C D E F G H Before 6,6...
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 After 5.0 6.8 2.0 2.1 7.3 7.1 12.8 8.1 7.9 8.8 5.4...
4. 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 data are simple random samples and that the difference have a distribution that is approximately normal. Construct a 95% confidence interval of the “before – after” differences. Does hypnotism appear to be effective in reducing pain? Before 11.2 5.7 7.1 8.7 12.7 7.0 5.4 0.7 After 6.8 2.3 7.9 8.5...
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 : 9.9 3.3 6.6 9.7 8.5 9.4 5.3 0.6 After:...
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? 4.9 Before After 7.8 6.4 9.9 7.7 12.0 8.6 9.2 8.4 9.2. 6.1...
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 6.8 11.5 After 8.4 6.9 6.4 10.4 2.6 7.3 Construct a 95%...
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. Before 10.3 0.6 10.1 11.4 9.9 7.7 3.6 1.1 After 6.9 2.1 7.6 8.7 8.2 6.9 3.9 2.3 a. Construct a 95% confidence interval for the mean of the "beforeminusafter" differences. nothingless thanmu Subscript dless than nothing (Round to two decimal places as needed.) b. Use a 0.05 significance level to test the claim that...