agentes están ocupados y que un agente estará disponible pronto. Formulación del modelo. De acuerdo con el planteamiento previo‚ se determina el siguiente modelo‚ en primer término‚ de un solo canal‚ donde la distribución de llegada es de tipo Poisson y los tiempos de servicio son exponenciales‚ de tal manera que el modelo planteado es de tipo: (M/M/1)‚ donde: λ= Cantidad promedio de llegadas por periodo = 1 llamada cada 3.75 min = .26 llamadas por minuto μ= Cantidad media de unidades que
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Illustrative Exam 11 Solutions BUAD311 – Operations Management Section A: Multiple Choices (circle only one) 1. Which of the following statement is correct? a. Make-to-order systems are better than make-to-stock systems. b. Make-to-stock systems are better than make-to-order systems. c. Hybrid systems are perfect and better than both MTO and MTS systems. d. Hybrid systems are worse than both MTO and MTS systems. e. None of the above e): It is hard to tell which one is better between
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conducted to document the current operation of the AD. The authors collected actual data over a one-year period for arrivals‚ waiting times‚ and service times. These data were categorized by month‚ day of the week‚ and time of day. The data were collected for all patient groups within the AD system: outpatients‚ inpatients‚ surgical day care patients and so forth. Data were recorded for arrival into the system (waiting time 1 (WT1))‚ and transition from check-in to financial arrangements processing (waiting
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order to better reflect the reality. (i.e. self servicing machine 2 experienced software problems and it was out of order for most of the time) Another adjustment we made to our simulation in order to best fit the real data was to set the inter-arrival and processing time in terms of our own designed distributions instead of using the classical built-in Exponential
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Automobiles arrive at the local Sonic Burger where employees on roller skates service them in parking lot while they sit in their automobiles at the rate of 4 every 10 minutes. The average service time is 2 minutes. The Poisson distribution is appropriate for the arrival rate and service times are exponentially distributed. If only one (1) employee is used answer a – g. a) What is the average time a car is in the Que? b) What is the average number of cars in the Que? c) What is the average
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Chapter 2—Introduction to Probability PROBLEM 1. A market study taken at a local sporting goods store showed that of 20 people questioned‚ 6 owned tents‚ 10 owned sleeping bags‚ 8 owned camping stoves‚ 4 owned both tents and camping stoves‚ and 4 owned both sleeping bags and camping stoves. Let: Event A = owns a tent Event B = owns a sleeping bag Event C = owns a camping stove and let the sample space be the 20 people questioned. a. Find P(A)‚ P(B)‚ P(C)‚ P(A C)‚ P(B C). b
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manned by two employees. Based on information obtained from similar information desks‚ it is believed that people will arrive at the desk at the rate of 20 per hour. It takes an average of 2 minutes to answer a question. It is assumed that arrivals are Poisson and answer times are exponentially distributed. a. Find the proportion of the time that the employees are idle. b. Find the average number of people waiting in the system. c. Find the expected time a person spends waiting in the system. ANSWER:
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A study of queuing system Queueing theory is the mathematical study of waiting lines‚ or queues. The theory enables mathematical analysis of several related processes‚ including arriving at the (back of the) queue‚ waiting in the queue (essentially a storage process)‚ and being served at the front of the queue. The theory permits the derivation and calculation of several performance measures including the average waiting time in the queue or the system‚ the expected number waiting or receiving service
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Economics Ch.1 Limits‚ Alternatives‚ Choices: Opportunity costs: to obtain more of one thing‚ society forgoes the opportunity of getting the next best thing. That sacrifice is the opportunity cost of the choice. Microeconomics: the part of economics concerned with decision making by individual customers‚ workers‚ households‚ and business firms. Macroeconomics: examines either the economy as a whole or its basic subdivisions‚ such as govt‚ household of business sector. Economic Resources:
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Final Exam – Fall 2011 Name __Caroline Herring__ Part One – Discussion Questions. Answer the questions in sufficient detail. For these discussion questions‚ find at least two online references of examples for each of the questions. In other words‚ what companies are using these topics in their operations? 1.. Explain process variation and process capability as it relates to the 6-sigma quality methodology. What companies are touting the use of 6-Sigma (other than Pocono Medical)? How
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