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The typical subway station in Washington, DC, has six turnstiles, each of which can be controlled by the station manager to be used for either entrance or exit control - but never for both. The manager must decide at different times of the day how many turnstiles to use for entering passengers and how many to use for exiting passengers. At the GWU Station, passengers enter the station at a rate of about 84 per minute between the hours of 7 AM and 9 AM. Passengers exiting trains at the stop reach the exit turnstile area at a rate of about 48 per minute during the same morning rush hours. Each turnstile can allow an average of 30 passengers per minute to enter or exit. Arrival and service times have been though to follow Poisson and exponential distributions, respectively. Assume rides form a common queue at both entry and exit turnstile areas and proceed to the first empty turnstile. The GWU station manager, Ernie Forman, does not want the average passenger at his station to have to wait in a turnstile line for more than 6 seconds, nor does he want more than 8 people in any queue at any average time. a) How many turnstiles should be opened in each direction every morning? (PLEASE WRITE OUT EQUATIONS) b) Discuss the assumptions underlying the solution of this problem using queuing theory.
As the individual responsible for determining demand forecasts for an item within an important product line, you always exceed your superior's expectations by providing a range in addition to a point estimate of demand. What size confidence interval ..
You are to write a 3-5 page summary to me as VP for Production, stating your observations of XYZ Manufacturing. In this memo, you will include: Make-Buy decisions on widgets and support your decision with made-up numbers. State the capacity you want ..
explain how your recommended changes would help Kmart become more profitable and a more viable competitor to stores like Wal-Mart.
Does this imply that the EOQ approximation is poor? Why or why not?
As you read through the experience that Swartz had in constructing business correspondence in his situation with Timberland, consider three concepts from chapters 1, 2, and 3 from your textbook, Business Communication for Success that he applied
What are the group decision-making processes and structures in place at your current or with a previous employer that were designed to eliminate bias, create structure, and cultivate consistently better decisions
create an equally weighted portfolio of five computer software stocks. is such a portfolio a diversified portfolio?
Arrivals at a box office in the hour before the show follow the Poisson distribution with lambda = 8 per minute. Servive times follow an expoential distribution with a mean of 6 seconds. Find the average lenght of the waiting line Lq=
Describe who you will invite to the meeting. Be sure to identify the stakeholders of the project, provide your rationale for selecting each role, and describe any potential conflicts that may arise as the organizational system
Select a photograph on the Internet, or a newspaper or magazine. describe how the image selected is particularly compelling. Which elements helped to communicate its mass media message or story? How do social media platforms enable individuals to “in..
Your task is to prepare an executive briefing that provides a comprehensive overview of a current topic that has important implications for the operations strategy of a specific industry sector
Illustrate what type of team would work best in this situation. Support your answer with concepts from text that applies to this proposed venture.
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