Question

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. Test Statistic is... P-Value is... State the conclusion for the test. Is it valid to argue that magnets might appear to be effective if the sample sizes are​ larger? 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. Treatment Sham n 19 19 x 0.53 0.45 s 0.69 1.07

Answer 1

R code for crictical value and p value is attached