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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. OA. H: ₁₂ H OC. H: ₁₂ H₂Hy

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. OA. H: ₁₂ H OC. H: ₁₂ H₂Hy

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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State the conclusion for the test. the null hypothesis. There ▼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? Since the for those treated with magnets is that magnets might appear to be effective if the sample sizes are larger <H4-₂ (Round to three decimal places as needed). the sample mean for those given a sham treatment, it valid to argue b. Construct a confidence interval suitable for testing the claim that those treated with magnots have a greater mean reduction in pain than those given a sham treatment.
Transcribed Image Text:State the conclusion for the test. the null hypothesis. There ▼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? Since the for those treated with magnets is that magnets might appear to be effective if the sample sizes are larger <H4-₂ (Round to three decimal places as needed). the sample mean for those given a sham treatment, it valid to argue b. Construct a confidence interval suitable for testing the claim that those treated with magnots have a greater mean reduction in pain than those given a sham treatment.
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. OA. Ho: H₁ H₂ H₁: ₁2₂ OC. Ho: #₁ #₂ H₁: Hy <H₂ The test statistic, t, is (Round to tyo decimal places as needed.) The P-value is (Round to three decimal places as needed.) OB. H: ₁₂ H₁: 1 P2 H OD. Ho: 1₁ y H₁: Hy #Hy in 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? X S Treatment Sham H₂ 11 0.38 1.25 P₁ 11 0.54 0.87 554
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. OA. Ho: H₁ H₂ H₁: ₁2₂ OC. Ho: #₁ #₂ H₁: Hy <H₂ The test statistic, t, is (Round to tyo decimal places as needed.) The P-value is (Round to three decimal places as needed.) OB. H: ₁₂ H₁: 1 P2 H OD. Ho: 1₁ y H₁: Hy #Hy in 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? X S Treatment Sham H₂ 11 0.38 1.25 P₁ 11 0.54 0.87 554
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