Debra Bishop's cabinet-making shop, Niagara Falls, has five tools that automate the drilling of holes for the installation of hinges. These machines need setting up for each order of cabinets. The orders appear to follow the Poisson distribution, averaging 4 per 8-hour day. There is only 1 technician for setting these machines. Her service times are exponential, averaging 3 hours each. Click the icon to view the finite queueing table for N=5. a) The service factor for this system is (round your response to three decimal places)