Your group is developing a new product, but have been struggling to get the product's stability, measured in days, to the level required. You are aiming for a stability value of 50 days or more. Four factors have been considered: - A = monomer concentration: 30% or 50% - B = acid concentration: low or high 0 C = catalyst level: 2% or 3% - D = temperature: 393K or 423K These eight experiments have been run so far: Experiment Stability l 2 3 4 5 6 7 8 The generator for this design was factor D = ABC, and the resulting least squares model: y = 29.5 5.753314 3.75m}; 1.2521: + 0.75330 + 0502;141:133 + 1.0wAzL'c 1.0mm}; 1. What is the interpretation of the \"3.75\" coefcient for $3 in the above model? [2] 2. What will the two factor interaction, AC, be confounded with? [2] 3. Where would you run the next experiment to try get the stability above 50 or greater? Take a step of 1 in coded units for factor C. Your answer must end with a table, that gives the values of A, B, C, and D in real world units. [8] 4. What is the predicted stability value at the conditions specied in your previous answer? [2]