
MATLAB: An Introduction with Applications
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ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Transcribed Image Text:Treatment
Sham
Researchers conducted a study to determine whether magnets are 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.
P1
H2
26
26
0.52
0.45
0.91
1.27
The test statistic, t, is. (Round to two decimal places as needed.)
The P-value is (Round to three decimal places as needed.)
State the conclusion for the test.
Click to select your answer(s).
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