5. Consider the model y = 0 + 11 + 21^2 + 32 + 43 + 512 + 613 + 71^22 + 81^23 +

Where 1 is a quantitative variable and

2 = { 1 2 , 0

3 = { 1 3 , 0

The resulting least squares prediction equation is = 48.8 3.41 + 0.071^2 2.42 7.53 + 3.712 + 2.713 0.021^22 0.041^23 What is the equation of the response curve for E(y) when 2 = 0 3 = 0? when 2 = 1 3 = 0? when 2 = 0 3 = 1? (6)