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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? OA. Ho: #₁ #1₂ H₁: Hy

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? OA. Ho: #₁ #1₂ H₁: Hy

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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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K w S 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. x 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? View an example Get more help. H d OA. Ho: Hy #4₂ H₁: Hy <H₂ I OC. Ho: #₁ #2₂ H₁ Hy 24/₂ The test statistic, t, is. (Round to two decimal places as needed.) 3 I E D с $ 4 R F V % % 5 T G 6 B MacBook Air Y H 9 N U J → 8 OB. Ho: ₁₂2 H₁: Hy #4₂ D. Ho: #1 #₂ H₁: 11₂ M I ( 9 K H O > O L command P Clear all - - x : option { [ ? 1 Treatment Sham 14 H H₁ 1₂ n 22 22 0.41 x 0.55 S 0.63 1.41 H Check answer } 1 delete return shif
Transcribed Image Text:K w S 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. x 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? View an example Get more help. H d OA. Ho: Hy #4₂ H₁: Hy <H₂ I OC. Ho: #₁ #2₂ H₁ Hy 24/₂ The test statistic, t, is. (Round to two decimal places as needed.) 3 I E D с $ 4 R F V % % 5 T G 6 B MacBook Air Y H 9 N U J → 8 OB. Ho: ₁₂2 H₁: Hy #4₂ D. Ho: #1 #₂ H₁: 11₂ M I ( 9 K H O > O L command P Clear all - - x : option { [ ? 1 Treatment Sham 14 H H₁ 1₂ n 22 22 0.41 x 0.55 S 0.63 1.41 H Check answer } 1 delete return shif
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