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a. b. C. Think of a simple exchange economy with two agents that have the following utility functions: U(-) = 0.25co + 0.5E[In(ci(0))] U()

 

a. b. C. Think of a simple exchange economy with two agents that have the following utility functions: U(-) = 0.25co + 0.5E[In(ci(0))] U() = co +E[ln(ci())] where denotes the two equally likely states at date 1. The endowments are Agent 1 Agent 2 Date t=0 2 4 Date t = 1 0=1 2 4 0=2 4 2 Describe the Pareto optimum or the set of Pareto optima. Is it unique? Is perfect risk sharing achieved? Why or why not? Answer the same question if the state 2 endowments were 5 for agent 1 and 3 for agent 2. Agents can trade with two Arrow-Debreu securities denoted by Q [with payoffs (1,0)] and R [with payoffs (0,1)]. Calculate the competitive equilibrium allocation. Is it Pareto optimal? Discuss intuitively its characteristics (the determinants of the prices of the two securities and the post-trade allocation). Suppose that both securities can be traded at the beginning and there are no short-selling constraints. A firm has zero cost of introducing one unit of either security, and it wants to maximize its profits. Which security should it introduce? For which agent is this introduction more valuable? Is the outcome Pareto optimal? Why or why not?

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a To find the Pareto optimum we need to maximize the sum of the utilities of the two agents subject to the resource constraints Let c1 and c2 be the c... blur-text-image

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