A Researcher Reports the Results of an Interaction in a Two-Way

Multiple Choice

A researcher reports the results of an interaction in a two-way between-groups ANOVA as: F (1, 80) = 2.83.What decision should be made based on the value of this test statistic?

A) Fail to reject the null hypothesis and conclude there is no support for a combined effect of the variables.
B) Fail to reject the null hypothesis and conclude the interaction should be investigated with bar graphs.
C) Reject the null hypothesis and conclude post hoc tests are needed.
D) Reject the null hypothesis and conclude the effect of one variable changes across levels of the other variable.