The help desk at Triple Stacked handles calls from customers regarding their high-end industrialswitches. The help desk is actually divided into two groups. The first group is called the"Frontline" and it is staffed with 5 people. The second group is called the "Solver" and it is 2staed with 3 people. There are three types of calls: "Routine," "Stumper," and "Nasty." All threetypes are first received by the Frontline desk. A Frontline staer can resolve a Routine call in 10minutes. The Frontline staer also spends 10 minutes with the Stumper and Nasty calls but isunable to resolve those calls in that time. Hence, after 10 minutes, the Frontline staer forwardsthe Stumper and Nasty calls to the Solver desk. At the Solver desk a staffer takes 15 minutes toresolve a Stumper call and 30 minutes to resolve a Nasty call. The table below includes theprocessing times, stang, and arrival rates for each of the three types of calls:• What is the implied utilization of each desk?• What are the actual and maximum low rates of each type of issue per hour through thisprocess? Processing time (min) at the...Types of issuesFrontline deskSolver deskCalls per hourRoutine10na.20Stumper10155Nasty1030DeskStaffingFrontline5Solver3

Implied UtilizationMatches the demand with capacity and it Can be higher than the 100% Implied…

Answered: The help desk at Triple Stacked handles…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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10. Customers arrive an average of 8 per hour and an average of 12 customers can be served in an hour. Assume this is an M/M/1 model. (Noteshaper Quick Start #18 - #20) what is the system utilization? what is the average length of the line? what is the average number of customers in the system? what is the average amount of time spent waiting in the line? what is the average amount of time a customer spends in the system? what is the probability of no customers in the system? 11. Customers arrive at a ferry ticket office at the rate of 18 per hour on Monday mornings. This can be described as a M/M/1 model. Selling the tickets and providing general information takes an average of 2 minutes per customer. One ticket agent is on duty on Mondays. (Noteshaper Scenario #34) a. What is the average length of the line on Monday mornings? b. On average, how long does a customer wait to buy a ticket on Monday mornings (in minutes)? c. How long does it take to successfully buy a ticket on Monday…
A copier store has four pieces of automatic equipment, but sometimes they are down because they need supplies, maintenance or repair. Each unit requires about two services every hour or, to be exact, each piece of equipment runs an average of 30 minutes before needing service. Service times vary greatly, from a simple service (such as pressing the reset switch or replenishing the paper) to disassembling the equipment in question. However, the average service time is five minutes. The time the equipment is down generates a loss of $60 per hour. The single employee who services the equipment earns $18 per hour. Using finite population analysis, answer the following questions: a. What is the average number of units idling? b. What is the average number of units still operating? c. What is the average number of units being serviced? d. The company is considering adding another manager at the same wage of $18 per hour. should it do so?
A fast-food restaurant offers a variety of products: from pre-made packaged sandwiches to milkshakes with different flavors. Many customers order one item time, other customers order multiple items. Sometimes customers buy the pre- made items, and some customers actually ask the restaurant to cook their food while they wait. The restaurant manager has kept careful records of some queuing statistics over several weeks. According to this data, the staff needs 4 minutes on average to serve a random customer. On average, the restaurant served 120 customers on a given day. This restaurant is open from 9 AM to 9 PM every day, and has a single service counter. If you want to help the manager measure this restaurant's waiting line performance, which of the following should you use? Exponential Service Rate Model The Finite Source Model Constant Service Rate Model O The multi phase single channel model
How many years (t) can we expect to do business with a customer? Thetotal number of years is denoted by T.
An average of 1200 parts arrive to the EP chamber during an 8-hour workday. Each part goes through two stages of processing. At each stage, a single product is processed at a time, and processing takes an average of 15 seconds at the first station and 12 seconds at the second station. Inter-arrival times and service times are exponentially distributed. At the end of the second step, the product goes through a quality check. 5% of the parts fail the quality check and are sent back to the second stage of service. Parts exit the system only after they pass the quality check. Ignoring the time required to perform the quality check or in moving the part through the facility, what is the average cycle time for parts?
A company has tool cribs where workers draw parts. Two workers have applied for the position of distributing parts to the other workers. Adriana is fresh out of trade school and expects $5 per hour. Her average service time is four minutes. Braxton is a veteran who expects $11 per hour. His average service time is two minutes. A worker's time is figured at $11 per hour. Workers arrive to draw parts at an average rate of 13 per hour. (a) What is the average time a worker would spend in the system under each applicant? (Give your answers in minutes. Round your answers to three decimal places.) minutes on average in the system. Under Braxton, a worker would spend minutes on average in the Under Adriana, a worker would spend system. (b) Which applicant should be hired? (Give your answers in dollars per hour. Round your answers to two decimal places.) The total cost under Adriana would be $ per hour, and the total cost under Braxton would be $ times into account, Braxton should be hired.…
Ashley’s department store in Kansas City maintains a successful catalog sales department in which four clerk takes orders by telephone. If four clerks are occupied on four-lines, incoming phone calls to the catalog department are answered automatically by a recording machine and asked to wait. As soon as the clerk is free, the party that has waited for the longest is transferred and answered first. Calls come in an average of 3 minutes. The clerk is capable of taking an order in an average of 10 minutes. Calls tend to follow a Poisson distribution, and service times tend to be exponential. a. λ= μ= b. Calculate P0 c. How many callers, on average, are waiting to place an order under the current operating system?
erex Corporation is a global manufacturer of aerial work platforms and materials processing machinery. They design, build and support products such as large lifting equipment used in construction. The company makes most pieces to order and customizes them to meet customers’ unique preferences.Terex maintained a manual system for yard management at their transfer centre in Washington that is always full of lifting equipment, which generated excessive costs for what should have been a relatively simple process of locating customers’ units to prepare them for delivery. A wallboard and sticker system was a low-tech solution for identifying equipment items in the yard at Terex. While inexpensive in itself, the solution cost around six minutes every time an employee had to locate a unit in the yard. It also required a considerable number of hours to be spent each month taking physical inventories. After a successful pilot, the company approved a new solution, replacing stickers, yard maps,…
In an M/M/1 queueing system, the arrival rate is 5 customers per hour and the service rate is 7 customers per hour. If the service process is automated (resulting in no variation in service times but the same service rate), what will be the resulting performance measurements? (Round all answers to three decimals.) What is the utilization? What is the expected number of customers in the system (L)? What is the expected waiting time (in hours) for the system (W)? What is the expected number of customers in the queue (Lq)? What is the expected waiting time (in hours) in the queue (Wq)?
Please do not give solution in image format thanku The flow rate through a process is 0.5 flow units per minute. The number waiting for the process is 1. The time to do the activity in the process is 1 minute. This is a stable system. The average amount of time a flow unit spends waiting for the activity and doing the activity = ______. Enter one integer (which can be 0) and ONE decimal, so the answer looks like X.X. Any of the Xs can be a 0.
Navern Corporation manufactures and sells custom home elevators. From the time an order is placed until the time the elevator is installed in the customer's home averages 141 days. The 141 days are spent as follows: Wait time Inspection time Process time Move time Queue time What is Navern's manufacturing cycle efficiency (MCE) for its elevators? Multiple Choice O O 41.1% 30.4% 58.9% 29 days 24 days 34 days 31 days 23 days 57.4%
A Company that makes shopping carts for supermarkets and other stores recently purchased some new equipment that reduces the labor content of the jobs needed to produce the shopping carts. Prior to buying the new equipment, the company used 4 workers, who produced an average of 87 carts per hour. Workers receive $13 per hour, and machine coast was $32 per hour. With the new equipment, it was possible to transfer one of the workers to another department, and equipment cost increased by $18 per hour while output increased by four carts per hour.a) Compute the multifactor productivity (MFP) (labor plus equipment) under the Prior to buying the new equipment. The MFP (carts/$) = ( ) (round to 4 decimal places).b) Compute the % growth in productivity between the Prior to and after buying the new equipment. The growth in productivity = ( ) % (round to 2 decimal places)

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