An aluminum extrusion mill is trying to improve the straightness of their extrusions by controlling the feed rate of the raw material and the temperature of the billet. The following conditions were used in their original test: Factor Low Level High Level Extrusion Speed 5 m/min 13 m/min Billet 300 deg C 400 deg C Temperature The direction of steepest ascent, in coded units, was found to be 0.740/1 (Temperature/Extrusion Speed) The maximum is believed to be in the range found 4 steps from the origin where the size of each step is one coded unit. If a Response Surface experiment is conducted with a centre point 4 coded units of Extrusion Speed from the original centre point, what will be the value of Extrusion Speed, in natural units, at the centre point of the Response Surface Experiment? Your