People spend around $5 billions annually for the purchases of magnets to treat a wide variety of pains. researchers conducted a study to determine whether magnets are effective in treating back pain. Pain was measured using the visual analog scale. the following results were obtained: reduction in pain level after magnet treatment: n= 20 sample mean=0,49 and s = 0.96 Reduction in pain level after sham treatment(placebo) n= 20. sample mean = 0.44, and s = 0,44 Use a 0.05 confidence level to test the claim that those treated with magnets have greater mean reduction in pain than those given a sham treatment(similar to a placebo) a) Define u, and u,. State null and alternative hypothesis b) Find the test statistics c) Find the p-value d) Conclusion
People spend around $5 billions annually for the purchases of magnets to treat a wide variety of pains. researchers conducted a study to determine whether magnets are effective in treating back pain. Pain was measured using the visual analog scale. the following results were obtained: reduction in pain level after magnet treatment: n= 20 sample mean=0,49 and s = 0.96 Reduction in pain level after sham treatment(placebo) n= 20. sample mean = 0.44, and s = 0,44 Use a 0.05 confidence level to test the claim that those treated with magnets have greater mean reduction in pain than those given a sham treatment(similar to a placebo) a) Define u, and u,. State null and alternative hypothesis b) Find the test statistics c) Find the p-value d) Conclusion
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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People spend around $5 billions annually for the purchases of magnets to treat a wide variety of
pains. researchers conducted a study to determine whether magnets are effective in treating back
pain. Pain was measured using the visual analog scale.
the following results were obtained:
reduction in pain level after magnet treatment:
n= 20 sample mean=0,49 and s = 0.96
Reduction in pain level after sham treatment(placebo)
n= 20. sample mean = 0.44, and s = 0,44
Use a 0.05 confidence level to test the claim that those
treated with magnets have greater mean
reduction in pain than those given a sham treatment(similar to a placebo)
a) Define u, and u,. State null and alternative hypothesis
b) Find the test statistics
c) Find the p-value
d) Conclusion
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