Microeconomics 2017
The second Gossen's law states that consumer's utility is the highest when (mark one answer):
The total utilities from consumption of each of the goods are equal
The marginal utilities from consumption of each of the goods are equal
The total utilities from consumption of each of the goods divided by their prices are equal
The marginal utilities from consumption of each of the goods divided by their prices are equal
A firm produses 4000 units selling them at a fixed market price which equals 22 zł/unit. At this level of production firm's average costs are equal to 15 zł/unit and marginal costs are equal to 19zł/unit. Assuming that the function of marginal costs is increasing, this means that:
The firm incurs losses and should decrease the production level
The firm incurs losses and should increase the level of production
The firm makes profits but it should increase the level of production
The firm makes profits but it should decrease the level of production
None of the answers
Which of the following statements about monopolies (facing a decreasing linear demand function) are always true?
Monopolies always make positive profits
If monopolist produces the optimal level of production then marginal cost is smaller than the price
Monopolies face no constraints on the price - they can set it as high as possible and will always be able to sell the product
The quantity produced by monopoly is smaller than would be prodiced if the monopoly was split into a group of smaller, competing companies.
Cross elasticity of demand for a product with respect to the price of some other product equals 3. This means that products are:
Substitutes
Complementary
Neutral
None of mentioned
Engel's law says that (mark one)
After his incomes increase, consumer starts buying goods which he considers to be inferior
The higher the price of a good the more preferred it is by the consumer
When consumer's incomes go up, he buys more normal goods, but the share of expenditures for those goods in the whole budget decreases
Consumer buys more normal goods once they become cheaper
Which of the listed situations could to the increase in the equilibrium quantity of fabric softeners in the competitive market (mark all answers which could lead to increase of the price)
Information in the press reveal that fabric softeners are harmful for the skin
Plastic containers for fabric softeners became more expensive
Consumer's incomes went up but at the same time the price of substances used to produce the softeners went down
Prices of washing machines decreased but at the same time a new tax paid by the producers was introduced
One consumer decided to spend 200zł monthly to buy two commodities: meat (25zł/kg) and CD's (40zł/unit). One day the meat's price went down to 20zł/kg and CD's price went up to 50zł/unit. By how much should the consumer's budget change so that he could afford buying all the consumption bundles which were available to him before the prices changed?
By winner's curse we understand a situation in which (mark one)
A firm which should have won the auction, loses it because of offering a price which is too low
One firm wins all the auctions
One firm is unable to win any auction because of the collusion of other competitors
A firm which won in the auction overpaid for the object bought
By opportunity costs we understand (mark one)
Lost profits; the firm would have made them if it had made a different decision
Lost costs; the firm would have suffered them if it had made a different decision
Special reserve which has to be kept by firms in case of unpredicted losses
Expenditures which the company had to cover because of unpredicted events
A Rawlsian welfare function is a social welfare function in case of which (mark one)
The welfare of the society is equal to the maximum of utilities of all society's members
The welfare of society is the weighted sum of utilities of all society's members
The welfare of society is the equal to the utility of one person (dictator)
The welfare of society is equal to the minimum of utilities of all society's members
In a merket there are hundreds of suppliers and 4 buyers (each having a similar market share), which kind of market is it? (mark one
Polypoly
Oligopsony
Bilateral oligopoly
Oligopoly
Monopoly
Four bidders A,B,C,D participated in a Vickrey action. The bids were bA=23, bB=15, bC=31, bD=29. Fill in the empty fields below:
In this situation bidder ........ Wins the auction and pays ....... .
Four bidders A,B,C,D participated in a Vickrey action. The bids were bA=23, bB=15, bC=31, bD=29. Fill in the empty fields below:
In this situation bidder ........ Wins the auction and pays ....... .
Let's denote by QAC, QAVC, QMC the production levels at which AC, AVC, and MC have their minimums. Assuming the typical shape of cost curves, the following relationship takes place:
QAC < QABC < QMC
QMC < QAVC< QAC
QMC < QAC < QAVC
QAVC < QAC < QMC
None of mentioned
When the price of variable production factor decreased, a monopolist reacted optimally. Comparing with the starting situation, his:
TR is now lower
TC is now bigger
VC is now bigger
Price is now lower
None of mentioned
The principle-agent model represents the problem that is called (select one)
Moral hazard
Prisoner's dilemma
Adverse selection
Free riding
The value of the price elasticity of demand for X equals -3,5. Which of the sentences below are true?
If price of X falls by 1%, the demanded quantity will increase by more than 1%
If price of X falls, the TR will increase
If price of X falls, the TP will increase
The demand is inelastic
None of mentioned
The long-run average cost curve in a firm is decreasing. This means that the firm's production function exhibits:
Increasing returns to scale
Constant returns to scale
Decreasing returns to scale
There's not enough data to say
Cob-Web model:
Heterogeneous
Concerning agriculture
Concerning expectations of changing demand
Oligopoly
AVC is increasing:
Returns to scale is increasing
Returns to scale is decreasing
Returns to scale is constant
Lack of informations
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