A chemistry instructor wants to find out whether having a practice test or allowing one note sheet will have a better effect on student performance on the actual exam. For their first test, they offer their students a practice test. For the second test, they do not offer a practice test, but instead allow a note sheet that students can use while taking the exam. They then compare student performance on the two exams. Which of the following correctly identifies the treatment of this experiment?(1 point)
Responses
a. The size of the note sheet that is allowed in the second exam.
b. The number of students who complete the practice test versus the number of students who create a note sheet.
c. The difference in student performance on the two exams.
d. Whether a practice test is given or a note sheet is allowed.
Which one is the correct answer and explain why it is the correct answer.
d. Whether a practice test is given or a note sheet is allowed.
This is the correct answer because the treatment in this experiment is whether or not a practice test is given or a note sheet is allowed. The purpose of the experiment is to determine which intervention (practice test or note sheet) has a better effect on student performance on the actual exam. The experiment is comparing the effects of these two treatments on student performance, so the treatment is whether a practice test is given or a note sheet is allowed.