Suppose 20 hypertensive patients are assigned at random to each of four therapy

Question

Suppose 20 hypertensive patients are assigned at random to each of four therapy groups, and the change of in diastolic blood pressure (DBP) is noted in these patients after a 1-month period. We want to see whether there is any difference in mean changes in DBP among the therapy groups. The results are given in the following table (please use this table to answer questions 18 through 20- Group Mean Change in DBP 8.6 5.3 4.9 1.1 s.d. change 6.2 5.4 7.0 6.5 20 20 20 20 Also the result of ANOVA analysis is shown below (please use this result to answer questions 18 through 20 ANOVA Table square Fstatisties p-value 188.45 39.7125 Source of variation Sum of squares d.f Mean 565 35 3 018.15 76 3583.5 79 745360.00435755 Between Groups Within Groups Total

Explanation / Answer

Answer - 1: Correct null hypothesis:

Mean changes among the four groups are same.

Option C is correct.

Answer - 19: Option A is correct

Answer - 3: Option B is correct.

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