Wagner and Houser (2010) were interested in whether meditation would affect teenagers' blood pressure readings. Fifty teens with borderline high blood pressure were randomly assigned to a meditation or control group. Those in the meditation group practiced meditating for 15 minutes a day for 4 weeks. At the end of 4 weeks, both groups had blood pressure readings taken.

1. Identify the population of interest.
2. Identify the sample.
3. Identify the independent variable(s).
4. Identify the dependent variable(s).
5. State the null hypothesis.
6. State the research hypothesis.
7. Is it t-tests and Anova's or correlation?