PracticeMidterm

PracticeMidterm - IEOR 4404 Simulation Prof. Mariana...

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IEOR 4404 Practice Midterm Exam Simulation October 7, 2008 Prof. Mariana Olvera-Cravioto Page 1 of 10 Practice Midterm Exam Place all answers on the question sheet provided. The exam is open book/notes/handouts/homework. You are allowed to use a calculator, but not a computer. Write all answers clearly and in complete sentences. All answers should be supported by analysis or an argument. This exam has a total of 100 points. First Name: Last Name: 1(a)(i) 1(a)(ii) 1(b) 1(c) 1(d) 1(e)(i) 1(e)(ii) 1(e)(iii) 1(e)(iv) 1(f) 2(a) 2(b) 3 Total Honor Code I resolve i ) not to give or receive aid during this examination, and ii ) to take an active part in seeing that other students uphold this Honor Code. Signature:
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2 IEOR 4404, Practice Midterm Exam 1. Consider the following simplified model of a supermarket checkout system. There are two identical checkout lines. Due to space constraints, at most two people can be waiting for service in each line. To make the system more efficient, the supermarket has hired a “coordi- nator” who uses the following rule to manage customer traffic at the checkout: If both lines are full, then turn the next customer away. If both lines have the same number of vacant spots, the coordinator flips a fair (i.e., 50-50) coin to determine which line to send the next customer to; if the toss is a head the customer is sent to line 1 and if it is a tail to line 2. If one line has fewer waiting customers than the other, the coordinator sends the next
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This note was uploaded on 12/20/2010 for the course IEOR E4404 taught by Professor Marianaolvera-cravioto during the Spring '08 term at Columbia.

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PracticeMidterm - IEOR 4404 Simulation Prof. Mariana...

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