Question
In: Statistics and Probability
A researcher would like to evaluate the effectiveness of a pain-relief patch designed for lower back...
A researcher would like to evaluate the effectiveness of a pain-relief patch designed for lower back pain. Prior to testing the patch, each of n = 8 patients rates the current level of back pain on a scale from 1 to 10. After wearing the patch for 90 minutes, a second pain rating is recorded. The data are as follows:
Before After
6 2
8 3
9 4
8 1
10 2
5 3
9 8
7 7
What are the hypotheses for this study?
What is the df for this study?
What is the tcrit for this study?
What is the variance for this study?
What is the Est. S.E. for this study?
What is the Mean Difference for this study?
What is the tobt for this study?
Solutions
Expert Solution
Let us denote the difference
d = current level of back pain before - current level of back pain after
orchestra answered 2 years agoRelated Solutions
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pain-relief patch designed for lower back pain. Prior to testing
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minutes, a second pain rating is recorded. The data are as
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Before
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__________________
G =
36
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G2 =
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A researcher would like to evaluate the effectiveness of a pain-relief patch designed for lower back...
A researcher would like to evaluate the effectiveness of a
pain-relief patch designed for lower back pain. Prior to testing
the patch, each of n = 8 patients rates the current level
of back pain on a scale from 1 to 10. After wearing the patch for
90 minutes, a second pain rating is recorded. The data are as
follows:
Before
After
6
2
8
3
9
4
8
1
10
2
5 ...
A researcher would like to evaluate the effectiveness of a pain-relief patch designed for lower back...
A researcher would like to evaluate the effectiveness of a
pain-relief patch designed for lower back pain. Prior to testing
the patch, each of n = 4 patients rates the current level
of back pain on a scale from 1 to 8. After wearing the patch for 90
minutes, a second pain rating is recorded. The data are as
follows.
Before
After
__________________
G =
36
6 2
G2...
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In a study designed to test the effectiveness of magnets for treating back? pain, 35 patients...
In a study designed to test the effectiveness of magnets for
treating back? pain, 35 patients were given a treatment with
magnets and also a sham treatment without magnets. Pain was
measured using a scale from 0? (no pain) to 100? (extreme pain).
After given the magnet? treatments, the 35 patients had pain scores
with a mean of 9.0 and a standard deviation of 2.2. After being
given the sham? treatments, the 35 patients had pain scores with a
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treating back pain, 35 patients were given a treatment with magnets
and also a sham treatment without magnets. Pain was measured using
a scale from 0 (no pain) to 100 (extreme pain). After given the
magnet treatments, the 35 patients had pain scores with a mean of
10.0 and a standard deviation of 2.2. After being given the sham
treatments, the 35 patients had pain scores with a mean...
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treating back? pain, 35 patients were given a treatment with
magnets and also a sham treatment without magnets. Pain was
measured using a scale from 0? (no pain) to 100? (extreme pain).
After given the magnet? treatments, the 35 patients had pain scores
with a mean of 5.0 and a standard deviation of 2.4. After being
given the sham? treatments, the 35 patients had pain scores with a
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magnettreatments, the
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patients had pain scores with a mean of
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and a standard deviation of
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