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In: Economics

Two fishermen - McKenna (M) and Natasha (N) - fish in the Paradise Pond. They make...

Two fishermen - McKenna (M) and Natasha (N) - fish in the Paradise Pond. They make their decisions simultaneously. The amount of fish, y, that each will catch (yMand yN) depends on the amount of time, e, that each puts in each day (eM and eN) and on the amount of time that the other spends fishing each day.

Each player therefore has a production function for fish:

McKenna: y^M(e^M,e^N)=10e^M−1/2(e^M∗e^N)

Natasha: y^N(e^M,e^N)=10e^N−1/2(e^M∗e^N)

Additionally, each player derives utility from the amount of fish that they consume while disliking the effort that they need to exert:

McKenna: u^M=y^M−(e^M)^2

Natasha: u^N=y^N−(e^N)^2

Let us define social welfare as total utility: W = uM+uN. The socially optimal outcome is the Pareto-efficient outcome that maximizes social welfare.

How big should the tax τ be, in order to make each player choose the socially optimal level of effort? (Round off to two decimal places.)

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