Tell whether the study is an experimental study or an observational study. You want to study the effects of regular exercise on a person's heart rate. You measure the heart rate of a person at rest and again after jogging in place for 5 minutes. The control group is students who are not a school athletic team. The experimental group is students are on a school athletic team. 0 Observational, since the assignment of individuals to the experimental and control groups are based on team membership. A Experimental, since the assignment of individuals to the experimental and control groups are based on team membership. C Observational, you are watching (observing) what happens to the heart rate of the students. 0 Experimental, you are experimenting on the students to obtain their heart rates