Question

Treatment Sham i Researchers conducted a way to determine whether magnets we effective in treating back pain. The results are shown in the table for the treatment with magnets group and the shamir 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 we us Complete parts (a) and (b) below. Use a 0.05 significance level for both parts 051 037 What are the nul and alternative hypotheses? OB. Hy ОА ң р <p> H₂:1, 2 OC. Moi HW OD. Hy Hi The test statistics (Round to two decimal places as needed) The value is Round to three decimal places as needed.)

Answer 1

Ans) Given dala ni=15 , n2 =15 Ti = 0.5), Tx=0-37 Si= 0.81, S2 = 1-16 Noll hypothesis Ho: Mi = lz Alternative hypothesis Ha! M, > M2 Test statistici . t = (F-*2) / 1 3 4 5 +=(0.51-6-3) long the Is it = 0.3832 t= 0.38 The p-value:- Degrees of freedom adf=nthera df = 28 Significance level =2=0.05 P-value = 0.351973 (from 2-table) = 0.352