Suppose a hypertension trial is mounted and 18 participants are randomly assigned to one of three comparison treatments. Each participant takes the assigned medication and their systolic blood pressure is recorded after 6 months on the assigned treatment. The data are shown in the table below. Is there a difference in mean systolic blood pressure among treatments? Run the appropriate test at %u03B1=0.05
Standard treatment: 124, 111, 133, 125, 128, 115
Placebo: 134, 143, 148, 142, 150, 160
New Treatment: 114, 117, 121, 124, 122, 128