Which is the proper way to state the alternative hypothesis for the interaction effect?
A) H0: an interaction effect does not exist
B) H1: not all µs are equal
C) H1: an interaction effect exists
D) H0: all µs are equal

Question

Quizplus · Accepted Answer

The alternative hypothesis for an interaction effect is that it exists, so option C is the most appropriate choice. Option A is the null hypothesis for any hypothesis test and is not specific to testing an interaction effect. Option B is a non-specific alternative hypothesis that does not indicate the direction of the effect. Option D is the null hypothesis for a test of main effects only, not for an interaction effect.

Which Is the Proper Way to State the Alternative Hypothesis