Question: Differences in slopes and intercepts. Refer to the previous exercise. Verify that the coefficient of x1x2 is equal to the slope for Group B minus

Differences in slopes and intercepts. Refer to the previous exercise. Verify that the coefficient of x1x2 is equal to the slope for Group B minus the slope for Group A in each of these cases. Also, verify that the coefficient of x1 is equal to the intercept for Group B minus the intercept for Group A in each of these cases. Do you think these two results will be true in general?

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