政府的角色

The construction of a new airport generates unpleasant noise for nearby residents, and yet the value of nearby properties increases as a result of the new airport. Which of the following is correct?

Newspaper and magazine publishers often increase their sales and incomes by reporting personal information about famous movie stars who usually do not receive any financial return from the publishers. However, these movie stars often benefit from these reports which serve as a kind of publicity for them. Which of the following statements is correct regarding this situation?

When a pianist plays the piano up to a point where the marginal value of the unpaid music to his/her neighbour is zero,

The new airport in Hong Kong relieves the people living under the old flight path from noise pollution, but causes noise pollution to those under the new flight path. After the opening of the new airport,

In a competitive labour market, the wage rate received by a worker depends on

Which of the following implies a divergence between private and social costs?

In a competitive market, the observed wage rates of men are generally higher than those of women. This implies

A factory dumps waste into a farmer's water supply, causing significant damage to the farmer. With prohibitive transaction costs in making contracts,

A divergence between private cost and social cost

A pianist plays the piano. His neighbour enjoys the music but the pianist receives no payment from the neighbour. A divergence between private and social costs/benefits occurs in the following situations EXCEPT: