16. The outer diameter,

d, of a cylinder is processed on an automatic machine with upper and lower tolerance limits of d + tv and d - tL . The production process follows a normal distribution with mean J.L and standard deviation CT. An oversized cylinder is reworked at the cost of c\ dollars. An undersized cylinder must be salvaged at the cost of C2 dollars. Develop the decision tree and determine the optimal selling d for the machine.