A college physics teacher wants to know whether using the course study guides will help her students score higher on their final exam.
She randomly selects 70 students from among the four sections of
Introductory Physics that she teaches. Then she randomly divides
them into two groups of 35 students each. Group A will use the course
study guides, and group B will not use the course study guides. After
all 70 students take their final exam, she will compare their results.
Which of these are the treatments in this experiment?
A. Being one of the 70 students selected and not being one of the 70
students selected
B. Using the course study guides and not using the course study
guides
C. Having taken high school physics and not having taken high
school physics
D. Taking a morning physics class and taking an afternoon physics
class