A forester measured 42 of the trees in a large wood that was up for sale. He found a mean diameter of 9.8 inches and a standard deviation of 3.7 inches. Suppose that these trees accurately describe the whole forest and that a Normal Distribution model applies. Draw the normal model for tree diameters. What size would you expect the central 95% of all trees to be? About what percentage of trees should be less than an inch in diameter? About what percent of the trees should be between 4.8 and 10.4 inches in diameter? About what percent of the trees should be over 12 inches in diameter