Half the members of a fishing tribe catch four fish per day and half catch 10 fish per day. A group of 10 members could build a boat for another tribe in one day and receive a payment of 45 fish for the boat.
Suppose the boat builders are drawn at random from the tribe. From the tribe%u2019s perspective, what is the expected cost of building the boat?
now supposing that members are selected based on opportunity cost, the minimum cost that the boat could be built for is? fish?