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Problem #1: Strategies for treating hypertensive patients by nonpharmacologic methods are compared by establishing three groups of hypertensive patients who receive the following types of nonpharmacologic therapy: Group 1: Patients receive counseling for weight reduction Group 2: Patients receive counseling for meditation Group 3: Patients receive no counseling at all The reduction in diastolic blood pressure is noted in these patients after a 1-month period and are given in the table below Group 1 Group 2 Group 3 4.5 2.6 2.3 4.2 4.8 -0.3 2.5 (a) What are the appropriate null and alternative hypotheses to test whether or not the mean reduction in diastolic blood pressure is the same for the three groups? (b) Find the values of SS(treatment) and SS(error) (c) What conclusion can you draw about the hypothesis test in (a)? Use α = .05 (A) Ho : μ 1 = μ-= μ3, (C) Ho : μ 1-H3 = μ3, (E) Ho : μ 1チH2 ± μ 3, H, : μ 1 H2 # μ3 (B) Ho : μ | = μ,-H3, HI : μ HI : μ# My for all pairs (1.J) (D) 110 : μ 1 ± μ2 H1 : μ,-My for all pairs (LJ) Hj for at least one pair (i,j) 5, Hl : μ,-My for at least one pair (i-J) Problem #1(a): B hypothesis tested SS(treatment), SS(error) (numbers correct to 4 decimals) Problem #1(b): 19.7597, 8.5606

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SOLUTION : Hypothesis :- Correct option is (A)

The following table is obtained Group 1 4.2 4.8 3.4 Group 2 4.5 2.6 2.3 Group 3 1.2 0.3 0.1 2.5 12.4 4.133 52.24 0.702 0.9866Xij 12.4 9.4 +3.5 25.3 Also, the sum of squared values is Σ xi) = 52.24 + 32.3 + 7.79 = 92.33 Based on the above calculationsM Sbetuweend fbetween S Sbetueen 19.76 = 9.88 MSvithin S 8.561 ndfuithin 7 Finally, with having already calculated the mean sSince it is observed that F 8.079 >Fc 4.737, it is then concluded that the null hypothesis is rejectea. Using the P-value app

Hence, there is sufficient evidence to conclude that the mean reduction in diastolic blood pressure is not same for the three groups at 0.05 significance level.

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