Question: A statistics instructor wants to see if allowing students to use a notecard on exams will affect their overall exam scores. The instructor thinks that

A statistics instructor wants to see if allowing students to use a notecard on exams will affect their overall exam scores. The instructor thinks that the results could be affected by the type of class: traditional, Web-enhanced, or online. He randomly selects half of his students from each type of class to use notecards. At the end of the semester, the average exam grades for those using notecards is compared to the average for those without notecards.
(a) What type of experimental design is this?
(b) What is the response variable in this experiment?
(c) What is the factor that is set to predetermined levels? What are the treatments?
(d) Identify the experimental units.
(e) Draw a diagram similar to Figure 7, 8, or 10 to illustrate the design.

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