2. The test​ statistic,is ______ ​(Round to two decimal places as​ needed.) 3. The​ P-value is ______ ​(Round to three decimal places as​ needed.) 4. State the conclusion for the test. ________________ the null hypothesis. There ______ sufficient evidence to support the claim that those treated with magnets have a greater mean reduction in pain than those given a sham treatment. 5. Is it valid to argue that magnets might appear to be effective if the sample sizes are​ larger? Since the ___________ for those treated with magnets is _________ the sample mean for those given a sham​ treatment, it ___________ valid to argue that magnets might appear to be effective if the sample sizes are larger. b. Construct a confidence interval suitable for testing the claim that those treated with magnets have a greater mean reduction in pain than those given a sham treatment. ____< μ1−μ2 < ______ ​(Round to three decimal places as​ needed.)

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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32

 

0.34 is wrong for the test statistic

 

2. The test​ statistic,is ______

​(Round to two decimal places as​ needed.)

3. The​ P-value is ______

​(Round to three decimal places as​ needed.)

4. State the conclusion for the test.

________________ the null hypothesis. There ______ sufficient evidence to support the claim that those treated with magnets have a greater mean reduction in pain than those given a sham treatment.

5. Is it valid to argue that magnets might appear to be effective if the sample sizes are​ larger?

Since the ___________ for those treated with magnets is _________ the sample mean for those given a sham​ treatment, it ___________ valid to argue that magnets might appear to be effective if the sample sizes are larger.

b. Construct a confidence interval suitable for testing the claim that those treated with magnets have a greater mean reduction in pain than those given a sham treatment.

____< μ1−μ2 < ______

​(Round to three decimal places as​ needed.)

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.
Treatment Sham
H₂
30
0.38
1.25
μ P₁
In
30
0.56
0.89
S
Transcribed Image Text: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. Treatment Sham H₂ 30 0.38 1.25 μ P₁ In 30 0.56 0.89 S
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