Question

Question 5 3 pts The following data concerns a randomized controlled trial. Two groups of 100 men with systolic blood pressure in the 120 to 130 range and diastolic blood pressure in the 80 to 90 range are treated to reduce the “pre-hypertensive” state. The men are in the age range 30 to 40 years. The control group 1 is given placebo and the experimental group 2 is given a treatment.to reduce blood pressure. Assume the standard deviations are equal for both groups. The results are as follows: SM1 = 131, SM2 = 124, S1 = 21, S2 = 24, n1 = 100, n2 = 100 Analyze this data to determine if the treatment significantly reduces blood pressure. Find null and alternative hypotheses for this test. The answer is in the form (Ho, Ha.). For this exam,"<>" means not equal. (u 1 = u2, u1<>u2) O (u 1 = u2, u1<u2) (u1 <>u2, u 1 = 2) O (u 1 = u2, u1 >u2)

Answer 1

Let of systolic systolic blood pressure ell be the mean the 120 to 130 range, M2 be the medo of in the 80 to go range diastolic blood pressure Assume that standard devidrions are equal claim: geduces The To fest the blood The null Ans: a the treatment significantly pressure. and alternative hypothesis e ll, = 42 licyla). ie. is Hoe + <> means not equal here, since, Ho! Vs li=12 Hi: li<> alla