Fail to reject the null hypothesis. There is not sufficient evidence to support the claim that those Deated with magnets Is it valid to argue that magnets might appear to be effective if the sample sizes are larger? sample mean Since the for those treated with magnets is greater than the sample mean for those given a sham treatment, it is 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. -934-₂.994
Fail to reject the null hypothesis. There is not sufficient evidence to support the claim that those Deated with magnets Is it valid to argue that magnets might appear to be effective if the sample sizes are larger? sample mean Since the for those treated with magnets is greater than the sample mean for those given a sham treatment, it is 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. -934-₂.994
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
Related questions
Question
Solve for B ..if you could show how to put it in a ti84 plus calculator that would be great to
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.
a. Use a 0.05 significance level to test the claim that those treated with magnets have a greater mean reduction in pain than those given a sham treatment.
What are the null and alternative hypotheses?
A. Ho: H₁ H2
Ha My H2
OC. Ho: H₁ H₂
H₁: H₁ <H₂
The test statistic, t, is .09. (Round to two decimal places as needed.)
The P-value is 466. (Round to three decimal places as needed.)
State the conclusion for the test.
www
Since the
B. Ho: H1 <H₂
H₁ H₁ H2
D. Ho: ₁ = 2
H₁: H₁ H₂
Fail to reject the null hypothesis. There is not sufficient evidence to support the claim that those treated with magnets have a greater mean reduction in pain than those given a sham treatment.
Is it valid to argue that magnets might appear to be effective if the sample sizes are larger?
sample mean
for those treated with magnets is greater than the sample mean for those given a sham treatment, it
is
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.
-.934 <H1-H₂.994
(Round to three decimal places as needed.)
Treatment
H₁
17
X 0.48
S 0.86
H
n
valid to argue that magnets might appear to be effective if the sample sizes are larger.
Sham
H2
17
0.45
1.16
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