A forester measured 35 of the trees in a large woods that is up for sale. He found a mean diameter of 10.5 inches and a standard deviation of 4.5 inches. Suppose that these trees provide an accurate description of the whole forest and that a Normal model applies. a)Draw a model for the tree diameters. b) What size would you expect the central 68% of all tree diameters to be? c)About what percent of the trees should have diameters below 6.0 inches? d) About what percent of the trees should have diameters between 15.0 and 19.5 inches? e)About what percent of the trees should have diameters over 15.0 inches?