This question: 1 Submit test Thatmart Placebo A study was done using a treatment group and a placebo group. The results are shown in the table. Assure that the to samples are independent simple cancion samples selected from normally distributed populations, and do not assume that the population wand and deviations are equal. Complete parts (8) and ibj below, Use a D.Of significance level for both parts. 2.35 2 68 a. Tool the dam that the two samples are from populations with the some mean. What are the null and alternative hypotheses? OD HO: H2 The test statistic, t, is | |(Round to two decimal places as needed.) The Puzzle is ].(Round to free decimal places as needed.) State the conclusion for the test O A Fail to rajed the null hypothesis. Theme is sufficient evidence to ward majedional to chain that the two samples i'm for populations wh the SITE mean O B. Fal to reject the null hypothesis. There is not sufficient evidence to warrant rejection of the claim that the tivo samples are from populations with Q C. Reject the red hypothesis. The' is not sufficient evidence to warner! rejection of the claim that the be samples are for popunions with the Q D. Reject the null hypothesis. There is sufficient evidence to warant agjection of the chain that the two samples are from populations wih the same Construct a confidence interval sutable for testing the clam that the bye se riples are from populations with the same ment. [Round to three decimal places as needed.) This teat 3 poms Tail: Chapter 9 Test Question & of 5 This questions 1 Submit toat OL MER What is the conclusion based on the hypothesis test? The test statistic is the critical magion, so the nul hypothesis. There is evidence to conclude that py # P2 The 98% confidence interval is