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. H2 22 22 0.49 0.44 1.17 0.57 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? O A. Ho: H1 =H2 H: H1 42 O B. H9: H1 = H2 H: H1 > H2 O C. Ho: H1 H2 O D. Ho: H1
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. H2 22 22 0.49 0.44 1.17 0.57 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? O A. Ho: H1 =H2 H: H1 42 O B. H9: H1 = H2 H: H1 > H2 O C. Ho: H1 H2 O D. Ho: H1
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Hi wonderful Bartleby team, I need help with this two final parts of the exercise of completing the sentence and the last part of it as well (both marked in red)
The sentence says:
-Since the (Sample Mean / Sample Standar Deviation ) for those treated with magnets is (Less than / Equal to / Greater than ) the sample mean for those given a sham treatment, it ( Is / Is Not ) valid to argue that magnets might appear to be effective if the sample sizes are larger.
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