A server operates with 80% utilization. The average processing time is 3 minutes. The coefficient of variation for the service process is 0.5 and the coefficient of variation of the arrival process is 1. What is the average time a customer waits in the queue according to the single-server queue model?A. 3.75 minutes. B. 7.5 minutes. C. 3 minutes. D. 10.5 minutes.

Joint cost cheyenne, inc. produces three products from a common input. the joint costs for a typical quarter follow: direct materials $45,000 direct labor 55,000 overhead 60,000 the revenues from each product are as follows: product a $75,000 product b 80,000 product c 30,000 management is considering processing product a beyond the split-off point, which would increase the sales value of product a to $116,000. however, to process product a further means that the company must rent some special equipment costing $17,500 per quarter. additional materials and labor also needed would cost $12,650 per quarter. a. what is the gross profit currently being earned by the three products for one quarter? $answer b. what is the effect on quarterly profits if the company decides to process product a further? $answer