A medical researcher wishes to try three different techniques to lower blood pressure of patients with high blood pressure. Participants are randomly selected and assigned to one of three groups. Group 1 is given medication, Group 2 is given an exercise program, and Group 3 is assigned a diet program. At the end of six weeks, each participants blood pressure is recorded. Group 1 Group 2 Group 3 13 8 6 12 2 12 11 5 4 15 3 4 9 4 9 8 0 8 a) provide the null hypothesis and a two-tailed alternative hypothesis for this research study. b) What are the between group variability and the within group variability for these data? c) Calculate the f-statistics for the data above d) Is there a statistically significant difference in mean blood pressure between the three groups?
Lowering Blood Pressure
A medical researcher wishes to try three different techniques to lower blood pressure of patients with high blood pressure. Participants are randomly selected and assigned to one of three groups. Group 1 is given medication, Group 2 is given an exercise program, and Group 3 is assigned a diet program. At the end of six weeks, each participants blood pressure is recorded.
| Group 1 | Group 2 | Group 3 |
| 13 | 8 | 6 |
| 12 | 2 | 12 |
| 11 | 5 | 4 |
| 15 | 3 | 4 |
| 9 | 4 | 9 |
| 8 | 0 | 8 |
a) provide the null hypothesis and a two-tailed alternative hypothesis for this research study.
b) What are the between group variability and the within group variability for these data?
c) Calculate the f-statistics for the data above
d) Is there a statistically significant difference in mean blood pressure between the three groups?
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