Question

Which of the following is not a step in the procedure for​ two-way ANOVA to test for an interaction​ effect, an effect from the row​ factor, and an effect from the column​ factor? Choose the correct answer below. A. If the​ P-value is​ small, reject the null hypothesis of no interaction. Conclude that there is an interaction effect. B. If the conclusion is that there is no interaction​ effect, then proceed to test for the effect from the row factor and the effect from the column factor. C. Begin by testing the hypothesis that there is no interaction between the two factors. D. If the​ P-value is​ large, reject the null hypothesis of no interaction. Conclude that there is an interaction effect.

Answer 1

The step that is not a part of the procedure for two-way ANOVA to test for an interaction effect, an effect from the row factor, and an effect from the column factor is D. If the P-value is large, reject the null hypothesis of no interaction. Conclude that there is an interaction effect.

Step-by-step explanation:

The step that is not a part of the procedure for two-way ANOVA to test for an interaction effect, an effect from the row factor, and an effect from the column factor is D. If the P-value is large, reject the null hypothesis of no interaction. Conclude that there is an interaction effect.

The correct step for testing the interaction effect is to compare the P-value with the chosen significance level (alpha) and reject the null hypothesis if the P-value is smaller than alpha. Therefore, options A and C are correct. Once the null hypothesis of no interaction is rejected, further tests can be conducted to determine the effects from the row factor and the column factor, which makes option B correct.

Answer 2

D. If the​ P-value is​ large, reject the null hypothesis of no interaction. Conclude that there is an interaction effect.

Step-by-step explanation:

If p value is smaller than significant level(5% or 1%), then reject the null hypothesis.

From the given information about two way ANOVA, First 3 are true statements based on decision rule.

4th statement is false, becasue p value is larger, then decision is to fail the null hypothesis and conclude that there is no interaction between them