A study was conducted to investigate the effectiveness of three different method

Question

A study was conducted to investigate the effectiveness of three different methods to lower the blood pressure of individuals diagnosed with high blood pressure. The researcher was interested in the reduction of diastolic blood pressure in the subjects that were assigned to three groups. The first group took medication, the second group engaged in daily aerobic exercises, and the third group was prescribed a plant-based diet. The subjects were placed in their regiments for four weeks. Diastolic blood pressure was recorded before and after the four-week period. The changes in diastolic blood pressure were recorded. Was there a significant difference between the methods?

The appropriate test for this problem is:

repeated measurements

The obtained statistic is:

The associated p value is:

Decision is:

Conclusion is:

Medication Exercise Diet 19 15 14 11 13 10 14 13 10 18 20 15 20 18 10 17 18 11 15 18 11 15 20 19 14 19 10 12 20 11 16 10 12 15 10 20 18 13 12 15 13 20 10 10 17 14 11 17 12 11 15 18 13 15 15 20 19 15 14 12 17 19 20 18 17 20 13 19 17 12 17 15 20 13 11 13 10 15 17 15 17 10 16 17 15 11 18 15 15 14 18 14 12 20 17 20 18 20 15 15 19 17 16 12 10 15 11 16 12 13 18

Explanation / Answer

applying one way ANOVA on above data:

The obtained statistic is: =0.15

The associated p value is:  .861

Decision is:-retain the null

Conclusion is: -- 4)no conclusion can be drawn

Source of Variation SS df MS F P-value Between Groups 3.15 2.00 1.58 0.15 0.861 Within Groups 1126.76 108.00 10.43 Total 1129.91 110.00

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