Question

7. In a two-way ANOVA, the researcher makes decisions regarding _____ null hypotheses.

	two interdependent
	three separate
	three interdependent
	two separate

9.

A researcher is interested in the effects of playing violent video games on aggressive behavior. There are two independent variables in his study—1) the type of video game played (violent or nonviolent), and 2) the amount of time spent playing the video game (either one day or one week). At the end of the testing phase each participant is given a test to measure their aggressive response in an ambiguous situation. If a significant main effect is found, should we conduct a post-hoc test? Why?

no; because each main effect has only two groups yes; but only if both main effects are significant yes; because we always conduct post-hoc tests when we reject the null hypothesis no; because we only conduct post-hoc tests after significant interactions

10.	A research design that includes at least one between-groups independent variable and one within-groups independent variable is referred to as a(n):
	mixed-design ANOVA. multivariate analysis of variance. analysis of covariance. multivariate analysis of covariance.

11.	If a researcher feels that a variable that is not being manipulated is associated with the independent variable, then they may choose to remove this variable statistically by using the technique of:
	multivariate analysis of variance. data extraction analysis. analysis of covariance. multiple analysis of variance.

Answer 1

in a two-way anova the researcher makes decisions regarding ________ null hypothesis a. three interdependent b. three separate c. two separate d. two interdependent

• Correct option is (b). three separate.