Question: 2. Refer to the previous exercise. a) State the assumptions for the analysis, and show that at least two of them may be vio- lated.

2. Refer to the previous exercise.

a) State the assumptions for the analysis, and show that at least two of them may be vio- lated. What is the impact?

b) Construct the regression model with dummy variables that applies for this ANOVA What does the estimate of the coefficient of Z equal?

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