Question

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 nom assume that the population standard deviations are equal. Complete all parts below. Use a 0.05 significance level Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? O A. Ho: *12 H₂ H <H2 C. Hos H, HP2 OB. Hy 12 H₂ HP2 OD. H 22 H, 1122 The test statistic, Li (Round to two decimal places as needed) State the conclusion for the test O A. Reject the null hypothesis. There is sufficient evidence to warrant rejection of the claim that the two samples are from populations with the same mean OB. Fall to reject the null hypothesis. There is not sufficient evidence to warrant rejection of the claim that the two samples are from populations with the same mean OC. Reject the null hypothesis. There is not sufficient evidence to warrant rejection of the claim that the two samples are from populations with the same mean D. Fall to reject the null hypothesis. There is sufficient evidence to warrant rejection of the claim that the two samples are from populations with the same mean ! Vo More Click to select your answers)

Answer 1

Sample 1 Sample ? 12 = 33 m, -27 7,=238 72 = 8.66 5,=0:57 S2 = 0.92 Mol, = M2 (Two tailed Jesd) Hi illi &lg -0.28 5-1442422 2.38-2.66 Terd Statistic, t X, X2 0.194118 (6.572 0.922 2 33 32 $'z 27 12 t=-1,44 2 2 2 1 Erli وأنتم Mi ng Degree of forcedon 2 S2 ni hol n2-1 0.572 + 0.92393 DA ( 27 33 71 53 10.92 0.57 27 172?)? 27-) 33-1

p-value = 2(P. (tan 144]] [sing t table] 700779) G10:1558 Since, P-value is greater than the x=0:05 So, Do not rejeck Ho Cormed option is [B