Test the hypothesis that 0₁ #02 at the a= 0.01 level of significance for the given sample data. Assume that the populations are normally distributed. Use the P-value approach. State the null and alternative hypotheses for this test. Ho: H₁: S Population 1 Population 2 19 19 3.1 4.8

A study was done using a treatment group and a placebo group. The results are shown in the table. 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 0.10 significance level for both parts. a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? OA. Ho H1 H2 H₁: H1 H2 o C. Ho: H = 2 H₁: H1 H2 OB. Ho: H1 H2 H1 H1 H2 OD. Ho H1 H2 H₁: 12 Treatment Placebo μ H1 H2 n 27 31 X 2.35 2.65 S 0.95 0.55

Question Help Instructor-created question Sham Magnet H1 Researchers conducted a study to determine whether magnets can affect 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 H are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Use a 0.05 significance level to test thế claim that those treated with magnets have a different mean reduction in than those given a sham treatment. P2 10 10 0.54 0.45 5. 0.62 1.49 pain What are the null and alternative hypotheses? O A. Ho: H1 H2 O C. Ho H1 H2 O D. Ho: H1= H2 H1 P1 H2 ents Upper critical value is: (Round to three decimal places as needed.) Lower critical value is: (Round to three decimal places as needed.) cess Library Click to select your answer(s) and then click Check Answer. Clear All Check…

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