Question: Refer to the previous two exercises When we allow interaction

Refer to the previous two exercises. When we allow interaction, two of the rows in the new ANOVA table are
Where Group*Repeat denotes the interaction effect.
a. Show the hypotheses, test statistic, and P-value for the test of H0: no interaction.
b. What is the implication of the result of this test? For instance, the analyses in previous exercises assumed a lack of interaction. Was it valid to do so?

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