Question 1: Factorial design at two levels. (30 points) An experiment was conducted on an operating chemical process in which four factors were studied in a 24 factorial design. Shown in the table below are the factor levels, the design, the random order in which the runs were made, and the response (impurity) at each of the 16 reaction conditions: Factor Levels - + 1 Concentration of Catalyst ('34)) 5 7 2 Concentration of NaOH(%) 40 45 3 Agitation speed (1pm) 10 20 4 Temperature (F) 15 0 1 80