For the Designs in This Chapter, Post Hoc Testing Occurs

Multiple Choice

For the designs in this chapter, post hoc testing occurs when

A) a 1-factor ANOVA yields a significant effect
B) a 1-factor ANOVA has failed to yield a significant effect
C) multiple t tests have been completed, and at least one has rejected the null hypothesis
D) multiple t tests have been completed, but none have rejected the null hypothesis