final_Winter2009

final_Winter2009 - Econ 51: Final Exam March 18, 2009...

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Econ 51: Final Exam March 18, 2009 Instructions: This is a closed book, closed-notes exam. You are allowed to use a hand-held calculator (i.e. no laptop). You have 180 minutes. Please answer all 4 questions. Please use a separate blue book for each question. Please write on each blue book the number of the question, your name, and your section number (or section time and TA). Always remember: think before you do the math . intelligently. As always, throughout log means the natural logarithm. Good luck! 1. Uncertainty and General Equilibrium (30 points) Consider three securities. One unit of security c pays a dollar in June if the Celtics win the NBA Championship, and zero otherwise. One unit of security l pays a dollar in June if the Lakers win the NBA Championship, and zero otherwise. One unit of security f pays a dollar in June if neither the Celtics nor the Lakers win the NBA Championship, and zero otherwise. Consider a market with two agents, Ray and Kobe, each endowed with 10 units of security c , 10 units of security l , and one unit of security f . Security f is not tradable, so agents have to hold their endowment of it. Ray believes that the Celtics will win it all with probability 0.3 and that the Lakers will win it all with probability 0.3 (thus, he believes that a third team will win it with probability 0.4). Kobe is more optimistic about the Lakers’ chances, and thinks that the Celtics have only a 0.2 probability to win, and that the Lakers have a 0.4 probability to win. Both Ray and Kobe have a vNM utility of
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This note was uploaded on 03/19/2011 for the course ECON 51 taught by Professor Tendall,m during the Winter '07 term at Stanford.

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final_Winter2009 - Econ 51: Final Exam March 18, 2009...

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