
157Mixture Designs to Optimize Pollution Level and Temperature of Fuels
the dialog box shown in Figure9.43 opens. Select “Target” for “Goal”, enter
“399” for “Lower”, and enter “400” for “Target” and “401” for “Upper”. (The
laboratory aims for a target temperature of 400 units.) Click on “OK” and the
optimal solution (X: 20%, Y: 35.6443%, and Z: 44.3557%) shown in Figure9.44
is the result.
FIGURE 9.38
Quadratic terms for fuel Zeo mixture design.
Analysis of Variance for Temperature (component proportions)
Source DF Seq SS Adj SS Adj MS F P
Regression 5 14933.7 14933.71 2986.74 416.36 0.000
Linear 2 5686.8 109.00 54.50 7.60 0.043
Quadratic 3 9246.9 ...