I need help with Part b please the answer I got was incorrect Researchers conducted a study to determine whether magnets are effective in treating back pain. Pain was measured using the visual analog scale, and the results shown beloware among the results obtained in the study. Higher scores correspond to greater pain levels. Assume that the two samples are independent simple random samples selected fromnormally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) to (c) below.Reduction in Pain Level After Magnet Treatment (4,):n=24, x= 0.54, s= 0.96Reduction in Pain Level After Sham Treatment (u,): n= 24, x=0.45, s= 1.39a. Use a 0.01 significance level to test the claim that those treated with magnets have a greater mean reduction in pain than those given a sham treatment (similar to a placebo).What are the null and alternative hypotheses?YA. Ho: H1 = H2H1: H1 > H2OB. Hg: H1 H2H1: H1 < H2O D. H9: H1

The given sample size for reduction in Pain level after magnet treatment is 24, sample mean is 0.54 and sample standard deviation is 0.96, the sample size for reduction in Pain level after sham treatment is 24, sample mean is 0.45, and sample standard deviation is 1.39.The degrees of freedom is, df=s12n1+s22n22s12n12n1-1+s22n22n2-1=0.96224+1.3922420.96224224-1+1.39224224-1≈40 The confidence level is 0.01 which is one tailed value, then the two tailed confidence level is 0.02. Computation of critical value: The critical value of t-distribution for 0.02 level of significance at 40 degrees of freedom can be obtained using the excel formula “=T.INV.2T (0.02, 40)”. The critical value is 2.4233.b The confidence interval appropriate for the hypothesis test in part (a) is, x¯1-x¯2-tα2s12n1+s22n2<μ1-μ2<x¯1-x¯2+tα2s12n1+s22n20.54-0.45-2.42330.96224+1.39224<μ1-μ2<0.54-0.45+2.42330.96224+1.392240.09-0.84<μ1-μ2<0.09+0.84-0.75<μ1-μ2<0.93 Therefore, the confidence interval appropriate for the hypothesis test in part (a) is -0.75<μ1-μ2<0.93.