A study was conducted to determine whether magnets were effective in treating pain. The values represent measurements of pain using the visual analog scale. Assume that both samples are independent simple random samples from populations having normal distributions. Use a
A study was conducted to determine whether magnets were effective in treating pain. The values represent measurements of pain using the visual analog scale. Assume that both samples are independent simple random samples from populations having normal distributions. Use a
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
Related questions
Question
A study was conducted to determine whether magnets were effective in treating pain. The values represent measurements of pain using the visual analog scale. Assume that both samples are independent simple random samples from populations having
0.05
significance level to test the claim that those given a sham treatment have pain reductions that vary more than the pain reductions for those treated with magnets. |
|
|
n
|
x
|
s
|
---|---|---|---|---|---|
Sham
|
20
|
0.43
|
1.37
|
||
Magnet
|
20
|
0.47
|
0.94
|
||
|
|
|
|
Question content area bottom
Part 1
What are the null and alternative hypotheses?
H0:
σ21=σ22
H1:
σ21>σ22
H0:
σ21=σ22
H1:
σ21<σ22
H0:
σ21=σ22
H1:
σ21≠σ22
H0:
σ21≠σ22
H1:
σ21=σ22
Part 2
Identify the test statistic.
F=enter your response here
(Round to two decimal places as needed.)Use technology to identify the P-value.
What is the conclusion for this hypothesis test?
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