1. An unreplicated 24 factorial experiment has been run in a chemical process. The response variable is molecular weight. The engineer has used the following four factors: After conducting the experiment, the engineer finds that three of the main effects and one of the interactions are large enough to be considered significant. The effect estimates are A = 40, B = 36, C = 50, and AC = 28. The overall average of the 16 runs in this experiment is 1500. Use the model from the experiment to predict molecular weight at the point time = 40, temperature = 125, feed rate = 12, and concentration = 45. The predicted response is: 1520 1585 1559 1537 None of the above