Question
In: Statistics and Probability
A study was conducted to investigate the effectiveness of acupuncture in reducing pain. Results for 6...
A study was conducted to investigate the effectiveness of acupuncture in reducing pain. Results for 6 randomly selected subjects are given in the accompanying table (the values are before and after acupuncture)
| subjects | A | B | C | D | E | F |
| before | 6.7 | 6.6 | 8.9 | 10.4 | 8.2 | 6.5 |
| after | 6.9 | 3.8 | 7.2 | 8.3 | 8.1 | 6.2 |
A) Is there sufficient evidence to conclude that acupuncture has no effect in reducing pain? Use cl: 0.05
b) construct a 95% confidence interval for the mean of the "before-after" differences.
Solutions
orchestra answered 2 years agoRelated Solutions
a study was conducted to investigate the effectiveness of acupuncture in reducing pain.
a
study was conducted to investigate the effectiveness of acupuncture
in reducing pain.
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in the table for the treatment (with magnets) group and the sham
(or placebo) group. The results are a measure of reduction in back
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effective in treating back pain. The results are shown in the table
for the treatment (with magnets) group and the sham (or placebo)
group. The results are a measure of reduction in back pain. Assume
that the two samples are independent simple random samples selected
from normally distributed populations, and do not assume that the
population standard deviations are equal. Complete parts (a) and
(b) below. Use a 0.05 significance level...
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effective in treating back pain. The results are shown in the table
for the treatment (with magnets) group and the sham (or placebo)
group. The results are a measure of reduction in back pain. Assume
that the two samples are independent simple random samples selected
from normally distributed populations, and do not assume that the
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group. The results are a measure of reduction in back pain. Assume
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effective in treating back pain. The results are shown in the table
for the treatment (with magnets) group and the sham (or placebo)
group. The results are a measure of reduction in back pain. Assume
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from normally distributed populations, and do not assume that the
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from normally distributed populations, and do not assume that the
population standard deviations are equal. Complete parts (a) and
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