Question

a scientist measures the heart rates of 30 students from the same class before and after they run for different amounts of time. the experimental set - up is shown below: group 1 had ten students who ran one lap. group 2 had ten students who did not run at all. group 3 had ten students who ran two laps. group 4 had 30 students from another class whose heart rates were not measured. which group is the control group in this experiment? group 1 from this class group 2 from this class group 3 from this class group 4 from another class

Explanation:

In an experiment, the control group is the one that does not receive the experimental treatment. Here, Group 2 had ten students who did not run at all, so they are the control group as they are the baseline for comparison against the groups that ran.

Answer:

Group 2 from this class