If you are interested in how well students perform on a standardized math-achievement test after they have completed a six-week math unit in either a computer-assisted class, a videotaped course, or a regular classroom, and also taking into consideration whether they are in the fourth or the fifth grade, what kind of design do you have? 2 x 2 between-subjects, factorial design O3x2 between-subjects, factorial design O33 between-subjects, incomplete factorial design one-way design