If you're interestd in how well students carry out on the standardized math achievement test after they've completed a six-week math unit in either the computer-assisted class, a videotaped course, or a regular classroom, what type of design do you have (there is no pre-test)?
A - a 3x3 between-subjects, factorial design
B - a 2x2 between-subjects, factorial design
C - a 3x3 between-subjects, incomplete factorial design
D - a one-way deisgn