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Researchers conducted a study to determine whether magnets are offective in treating back pain. The results are shown in
Posted: Wed May 11, 2022 12:41 pm
by answerhappygod
- Researchers Conducted A Study To Determine Whether Magnets Are Offective In Treating Back Pain The Results Are Shown In 1 (41.3 KiB) Viewed 31 times
Researchers conducted a study to determine whether magnets are offective 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. Treatment H1 n 30 X 0.49 s 0.94 Sham H2 30 0.44 1.08 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: h=12 H:11 12 loc. Hot 12 H₂:14 ов. Но на <a H:H2H2 OD. Ho H4142 H: H1 H2 The test statistic, t, is (Round to two decimal places as needed.)