An industrial engineer working at the bank wants to work on reducing the waiting times of customers in the system. For this purpose, it has modeled the system as simulation as M / M / 1 queue system. By running the simulation model 10 times, it recorded the average waiting times of the customers. According to these data, at the end of a day, estimate the average waiting time of a customer and get the confidence interval for the average waiting time of a customer at 90% confidence level.
Repeat 1 2 3 4 5 6 7 8 9 10
Average waiting time in the queue (min) 1.55 1.70 1.24 2.14 2.00 1.59 2.69 2.76 1.80 2.50
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