Question

Treatment 1 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. Sham H2 24 0.39 1.43 24 0.53 0.97 x S 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? O A. Ho: M1 = 42 H:H1 H2 O C. Ho: Hi H2 HH1 H2 OB. Ho H1 H2 HH1 242 OD. Ho: M1 =12 H:H1*2

B.) The Test statistic is?

C.) The P Value is?

D.)State the conclusion for the test

E.) 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.

____< μ1−μ2 < ______

​(Round to three decimal places as​ needed.)

Answer 1

@ option I Ho: Malla vs Hi: M,>l2 x=0.05 land of signiti Cance The test statistic t=(81-82) (0.53-0.39) ③ t=10.3969 df241 (C) The p-value = (-3467] (E) the 90%. Confidence intervd farl (Mila) tv, -H) I (tera Usaha ) = 0-4 FC 168293 Janeiro (1452 felixions fail to see . 084536,0 7336)