Problem 10-10 (Algo) Specifications for a metal shaft are much wider than the machine used to make shafts is capable of. Consequently, the decision has been made to allow the cutting tool to wear a certain amount before replacement. The tool wears at the rate of 0.005 centimeter per piece. The process has a natural variation, o, of 0.020 centimeter and is normally distributed. Specifications are 15.8 to 16.0 centimeters. A three-sigma cushion is set at each end to minimize the risk of output outside of the specifications. 30 Wear rate 30 Lower Starting specification process mean Ending Upper process specification mean 0 Number of shafts How many shafts can the process turn out before tool replacement becomes necessary? (See diagram.) (Do not round intermediate calculations. Round your final answer to the nearest whole number.) Number of shafts pieces