Misha Is Comparing Different Types of Typing Instruction

Multiple Choice

Misha is comparing different types of typing instruction. In one group, he used a classroom-based instructional method, and for the other group, he used a computer-based training program. After a six-week treatment, he assessed differences in their typing ability. Of the following, which is the appropriate test of significance for Misha to use assuming random assignment and no pretreatment differences?

A) The t test for independent samples
B) The t test for nonindependent samples
C) Analysis of difference scores
D) ANOVA