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4. Consider the following data from a factorial experiment: Factors Response. Vield fel .x) CA(g/L) T(C) 10 Replicate 1 12 Replicate 2 13 10 20 1.0 15 14 30 1.0 22 23 10 3.0 18 19 20 30 19 21 30 3.0 20 23 a. Determine the appropriate form of the general DOE model for this factorial design: b. Define the factors as coded variables. Use Tand Cu to represent a value of temperature and concentration of A. X1 = X = 4. Consider the following data from a factorial experiment: Factors Response. Vield fel .x) CA(g/L) T(C) 10 Replicate 1 12 Replicate 2 13 10 20 1.0 15 14 30 1.0 22 23 10 3.0 18 19 20 30 19 21 30 3.0 20 23 a. Determine the appropriate form of the general DOE model for this factorial design: b. Define the factors as coded variables. Use Tand Cu to represent a value of temperature and concentration of A. X1 = X =