Imagine a warehouse that is operated in two shifts of eight hours, with four workers each receiving an average of 1,200

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Imagine a warehouse that is operated in two shifts of eighthours, with four workers each receiving an average of 1,200 ordersa day. This is equivalent to an average inter-arrival time of 48seconds and the standard deviation of the inter-arrival time isabout 24 seconds. Moreover, the current service time, includingpicking and packing, takes an average of 180 seconds with astandard deviation of 90 seconds. What is the average number oforders waiting to be picked and how many orders are in the processon average.