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. Use a 0.05 significance level for both parts. a. 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: H1 H2 ○ C. Ho: H₁ =H2 H₁₁₂ The test statistic, t, is (Round to two decimal places as needed.) Click to select your answer(s). OB. Ho: H1 H2 OD. Ho H₁ =H2 Treatment Sham H n 22 22 X 0.56 0.37 S 0.59 1.47 4234 ☆ 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. Use a 0.05 significance level for both parts. The P-value is (Round to three decimal places as needed.) State the conclusion for the test. Treatment Sham Hy #2 n 22 22 x 0.56 0.37 0.59 1.47 the null hypothesis. There i 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. Click to select your answer(s). the sample mean for those given a sham treatment, it valid to argue Researchers conducted a study to determine whether magnets are effective in treating back pain. The results are shown in the table for the reatment (with magnets) group and the sham (or placebo) group. The results are a measure of reduction in back pain. Assume that the wo 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. Use a 0.05 significance level for both parts. 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. μ H1 In 22 22 X 0.56 0.37 0.59 1.47 4234 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 magnets have a greater mean reduction in pain than those given a sham treatment. << (Round to three decimal places as needed.) Click to select your answer(s).