2.17 Given the information in Problem 2.16 and the information in the table below, how many machines are needed to perform each operation (round up to nearest integer)? Assume operations 1, 2, and 3 run for 16 hours per day, five days per week. Machine 4 is available for eight hours per day, five days per week. Operation Standard Time 1 3 min 2 2 min 3 5 min 4 10 min Efficiency 100% 95% 102% 90% Reliability 95% 90% 90% 95% Assuming that machines 1-3 are part of a dedicated manufacturing cell, that operation 4 is performed by a general-purpose machine that is used specifically for rework, and that machines needed for operation 4 are located somewhere else in the facility. Rec- ommend an alternative strategy for performing operation 4 (rework), discussing specif- ically the issues related to your strategy (use numerical results if applicable)