Question: 1. Servicing time = 0.6 min, machine time = 1.5 min, walking time = 0.2 min, operator rate: $12/hour, machine cost: $15/hour. How many machines

1. Servicing time = 0.6 min, machine time = 1.5 min, walking time = 0.2 min, operator rate: $12/hour, machine cost: $15/hour. How many machines do you recommend based on the total expected cost? 2. There are 4 injector machines, and the machine goes down roughly 25% of the time. What is the probability of seeing 3 machines down? Calculate using the random servicing rule. 3. In synchronous servicing, operator servicing time (s) is 1 minute; total machine running time (m) is 3 minutes, and operator walking time (w) is 0.2 minute. If you calculate, this n value is not a whole number. If you choose a whole number, the operator will be idle some portion of the time. In this situation, how many machines will that be? a

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