106) Create a table that lists any three performance measures for a service system in the left column. In the center column, indicate what steps management can take to improve system performance on those metrics. In the rightmost column indicate what steps management can take to improve customers' perceptions of...

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102) Explain how waiting lines can develop even when the service time is a constant. 103) What are priority rules? Provide examples and indicate why a manager would choose to adopt one over another. 104) Your employer is considering a choice between a single-line and a multiple-line arrangement. The operation...

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91) An operations manager organizes a process improvement team and the resulting process has a lower μ. Which statement is the best description of this change? A) Arrival rate has fallen. B) There are fewer phases in the new system. C) Interarrival time has fallen. D) Server efficiency has improved....

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81) The production rate has been steady at 20 units per hour. The average work-in-process inventory at this station is 15 units. What is the average lead time through this manufacturing station? A) 15 minutes B) 30 minutes C) 45 minutes D) 1 hour 82) The average lead time of...

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  Scenario C.5 A trucking firm has five trucks that each requires service at an average rate of once every 50 hours, according to an exponential distribution. The firm has a mechanic who needs five hours to complete the average job with exponential service times. 71) Use the information in Scenario C.5. What...

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61) Use the information in Scenario C.2. What is the average amount of time a customer spends waiting in line and being served? A) Less than or equal to 1.0 minutes B) Greater than 1.0 minutes but fewer than or equal to 1.50 minutes C) Greater than 1.5 minutes but...

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51) Use the information in Scenario C.1. What is the probability that customers with tickets arrive and the ticket taker is not helping another patron? A) 0.011 B) 0.11 C) 0.22 D) 0.33 52) Use the information in Scenario C.1. What is the average number of customers in line? A) 0.33...

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41) With a single-server model, increasing the arrival rate by 10 percent and also increasing the service rate by 10 percent will result in A) an increase in the utilization of the server. B) an increase in the average number of customers in the system. C) a decrease in the...

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31) Customers arrive according to a Poisson distribution. The average number of customer arrivals per hour is three. The probability that four customers will arrive in the next two hours is A) less than or equal to 0.10. B) greater than 0.10 but less than or equal to 0.12. C) greater...

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21) The single, multiple, and finite queuing models all assume that A) the arrival rate exceeds the service rate. B) the number of servers exceeds the number of customers. C) the number of customers exceeds the number of servers. D) the customers are patient. 22) An automatic, drive-through car wash is...

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11) The number of customers in queue and being served also relates to service efficiency and capacity. 12) Long lines always mean long waiting times. 13) It is impossible for management to affect the rate of customer arrivals. 14) Management, servers, and customers would all be happy if, in a...

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4S.1  End-of-Chapter Problems 1) Waiting lines cannot develop if the time to process a customer is constant. 2) The four elements common to all waiting-line situations are a customer population, a waiting line of customers, the service facility, and a priority rule. 3) Waiting Line specifically refers one customer or item...

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174) Consider the MPS, BOM, and inventory data shown below. Master Production Schedule: the following table shows the MPS start quantities. Bill of Material: - Item A uses 2 each of component D, 1 each of component C and 2 each of subassembly B. - Subassembly B uses 2 each of component E. Selected Inventory...

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169) Complete the following MRP schedule: 170) Complete the following MRP schedule: 171) Complete the following MRP schedule: 172) Complete the following MRP schedule: 173) Complete the following MRP schedule:...

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164) In a dependent demand environment, explained why MRP does a better job of estimating the need to replenish inventory items than does a fixed order quantity system. 165) Discuss planning lead time for inventory and manufacturers. 166) What is a bill of materials? Discuss. 167) Discuss the master production schedule. 168) Complete the...

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159) Discussed why lots sizing is important in MRP. 160) Discuss both the advantages and disadvantages of using an MRP system, which when working, allows a firm to react to even minor changes in production requirements. 161) To make effective use of a dependent inventory demand model, what information is necessary for...

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154) Describe how ERP systems are designed. 155) What is an "action notice" in an MRP system? 156) Explain why MRP does a better job of estimating the need to replenish inventory items than does the fixed order quantity system in a dependent demand environment. 157) In an MRP system, from what sources...

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141) ________ are orders that have been placed, but not yet completed. 142) Projected ________ inventory is an estimate of the amount of inventory available each week after gross requirements have been satisfied. 143) ________ are orders that have not yet been released to the shop or the supplier. 144) ________ is a...

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131) In MRP, a(n) ________ is an item that may go through one or more operations to be transformed into or become part of one or more parents. 132) MRP ________ is a process that converts the requirements of various final products into a material requirements plan that specifies the replenishment...

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  Table 13.8 Sunshine Manufacture produces three products, X, Y, and Z. The production of these end items is controlled by an MRP system. Each end item X is assembled with two components of A and one component of B. Each end item of Y is assembled with two components of...

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111) Use the information from Table 13.6. What is the planned receipts quantity in week 3? A) 0 units B) 10 units C) 20 units D) 30 units 112) Use the information from Table 13.6. If the lot-sizing rule were L4L instead of FOQ = 30 units, what would be the planned order release quantity...

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101) Use the information in Table 13.3. Which one of the following statements on item C is TRUE? A) There will be no action notices for item C. B) There will be exactly one action notice, to release a new order. C) There will be exactly two action notices, to release a new...

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91) Use the following MRP record to answer the following question. What is the planned order release quantity in week 4? A) 0 units B) greater than 0 units but less than or equal to 50 units C) greater than 50 units but less than or equal to 100 units D) greater than 100...

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81) A technique for projecting time-phased requirements for critical workstations is a definition of A) material requirements planning. B) distribution requirements planning. C) capacity requirements planning. D) manufacturing resource planning. 82) Which of the following statements concerning MRP is TRUE? A) Dependent demand items tend to experience relatively constant demand rates. B) MRP systems use independent demands...

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71) If a planned receipt for an item is due in week 6 and the item's lead time is 2 weeks, in which week will the corresponding planned order release occur? A) Week 2 B) Week 4 C) Week 6 D) Week 8 72) Which one of the following statements about MRP is best? A) MRP...

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