Problem IV. In December 2002, medical fellow Mark Nelson published his examination of the effects of the curse. He determined the age at death of 25 people exposed to the curse and an additional 1 l Westerners in Egypt at the time of the opening of the Tomb who were not exposed to the Tomb or its curse. He reported the average age at death of the 25 exposed was 70 years with a standard deviation of 12.4 years. In contrast, the average age at death of the 11 unexposed was 75 years with a standard deviation of 13.0 years. Conduct a formal hypothesis test using the t-statistic to determine whether there is sufcient evidence to support the Curse of the Mummy. (Ifo curse existed, people exposed to the Tomb wold die younger than people not exposed to the Tomb. ) Use a: = 0.10 and use equal variance procedure. Step 1. Hypotheses: Ha: Ha: Step 2: II = : df = {according to the equal variance assumption] Step 3: Test Statistic: State the generic equation, substitute in specic values and derive the final answer below. S2 =(n1_1)slz+("2 _l)s': = "' nl+n22 Step 4: {a} Find the critical value; [bl Draw the graph and \"rejection region: [clthe rejection Rule Step 5: {a} Decision {Reject Ho vs Do not Reject Ho] Step 5: lb) Conclusion {use complete sentence}