Consider a community of two families A and B, who contribute EA and EB dollars to the community’s events budget. Community events are a public good and the total quality of events provided E = EA + EB. Assume each family has an annual income of $60 which it splits between the events budget and all other consumption spending X. Family utility functions are given by UA = XA^1/2 E^1/2 and UB = XB^1/2E^1/2.   (a) What event budget would maximize the social welfare function W = UA + UB? (Study tip: You can either set up and solve the social planner’s problem, or recall the necessary condition for optimal public good provision. I recommend the latter.)   (b) If households privately decide how much to contribute to the event budget, what will the total budget be? (Study tip: Begin by finding each household’s best response to the other, then solve. You can use the fact that the problem is symmetric to save time in this step.)

Microeconomic Theory
12th Edition
ISBN:9781337517942
Author:NICHOLSON
Publisher:NICHOLSON
Chapter4: Utility Maximization And Choice
Section: Chapter Questions
Problem 4.14P
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Consider a community of two families A and B, who contribute EA and EB dollars to

the community’s events budget. Community events are a public good and the total

quality of events provided E = EA + EB.

Assume each family has an annual income of $60 which it splits between the events

budget and all other consumption spending X. Family utility functions are

given by UA = XA^1/2 E^1/2 and UB = XB^1/2E^1/2.

 

(a) What event budget would maximize the social welfare function W = UA + UB?

(Study tip: You can either set up and solve the social planner’s problem, or

recall the necessary condition for optimal public good provision. I recommend

the latter.)

 

(b) If households privately decide how much to contribute to the event budget, what

will the total budget be?

(Study tip: Begin by finding each household’s best response to the other, then

solve. You can use the fact that the problem is symmetric to save time in this

step.)

 

 

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