Suppose a hypertension trial is mounted and 18 participants are randomly assigned to one of the comparison treatments. Each participant takes the assigned medication and his or her systolic blood pressure is recorded after 6 months on the assigned treatment. The data are as follows.

Standard Treatment	Placebo	New Treatment
124	134	114
111	143	117
133	148	121
125	142	124
128	150	122
115	160	128

Is there a difference in mean systolic blood pressure among treatments? Run the appropriate test at = 0.05.

What is the numeric result for test statistics?

Follow the hypothesis testing steps:

1. Set up hypotheses and determine level of significance

2. Select the appropriate test statistic. Write the formula you choose.

3. Set up decision rule.

4. Compute the test statistic.

5.Interpretthe result.