In Example 26.2 a multiple regression analysis created a best subset model from the consideration of four input factors. Plan the factors and the levels of the factors for a DOE, given that the...

In Example 26.2 a multiple regression analysis created a best subset model from the consideration of four input factors. Plan the factors and the levels of the factors for a DOE, given that the desired throughput is to be at least 25. A new design is to also be considered within the DOE, along with plant location. Maximum acceptable ranges for the input variables are

A: 6–9

B: 1–5

C: 3–4

D: 135–180

E: Design (old versus new)

F: Plant (location 1 versus location 2)