A college biology teacher wants to know whether being tutored at the
study lab will help her students score higher on their final exam. She
randomly selects 60 students from among the four sections of
Introductory Biology that she teaches. Then she randomly divides
them into two groups of 30 students each. Group A will be tutored at
the study lab, and group B will not be tutored at the study lab. After all
60 students take their final exam, she will compare their results.
Which of these are the treatments in this experiment?
A. Taking a morning biology class and taking an afternoon biology
class
B. Being tutored at the study lab and not being tutored at the study
lab
C. Having taken high school biology and not having taken high
school biology
O D. Being one of the 60 students selected and not being one of the 60
students selected
