Questions tagged [microeconomics]

Microeconomics is a branch of economics that studies the market behavior of individual actors (usually firms and consumers) and the aggregation of their actions in different institutional frameworks (usually the market).

356 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
0
votes
0answers
45 views

Microeconometrics course vs time series

I am currently a graduate student in Operations Research and I would like to learn econometrics, as it is not a part of the core curriculum. I am comfortable with matrix algebra (many courses used ...
0
votes
1answer
27 views

Refinements in signaling games with three sender types

What are the pros and cons of the Intuitive Criterion and the Criterion of Divinity in signaling games with three types? I find that separating equilibria often survive the intuitive criterion, ...
0
votes
0answers
29 views

Inforamtion asymmetry modeling

Is there any cook book, in finance, for models in information asymmetry, so as to make some practice?
0
votes
0answers
94 views

On shapes of indifference curves

I encountered this question in Microeconomics by Pindyck and Rubinfeld. The question says that "Suppose Jones and Smith have each decided to allocate $1000 per year to an entertainment budget in the ...
0
votes
2answers
36 views

How to derive substitution and income effect using Slutsky equation if we don't know which of the prices change?

We have the utility function $$U(x,y)=x + y$$ and we have to derive the substitution and income effects using Slutsky equation. But after I derive the Hicksian demand functions for e.g. x: $$h_x= \...
0
votes
0answers
18 views

How to find the total effect of a price change on the quantity demanded?

I'm computing how the quantity demanded changes after the price change. The task is to maximize $$U(F,G) = F^{1/3}G^{2/3} s.t. 1F+ 2G = 90$$ I get $$F=G=U=30$$ But then prices drop for 0.5 each ...
0
votes
0answers
40 views

How to prove monotonic transformation of the function and equivalence?

At the microeconomics course I have to prove monotonic transformation of the function U(x,y) = A(x^a)(y^b) into U(x,y) = (x^0.5)(y^0.5) Since the MRS are ay/bx and x/y resp. I can obviously only ...
0
votes
0answers
19 views

Market mechanism design and decision rule based on a graph

I am doing a micro course right now. I came upon this question while studying and I was hoping for help/hints on how to solve it or what resources to consult to better understand the topic. the ...
0
votes
0answers
39 views

Second welfare theorem problem

I would like to get a better understanding of part c of the following problem. It appears to me that Walrasian allocations do not change but I want to confirm whether I am right or not. Thanks. ...
0
votes
0answers
24 views

weakly preferred consumer bundles

I am currently studying consumer choice and saw that weak preference refers to when an individual prefers or is indifferent to two bundles (such as bundle A and bundle B). I was wondering what is ...
0
votes
0answers
41 views

Certainty equivalent and risk premium

I'd like some guidance on the below practice question on uncertainty in consumer theory. I think I am confused on the certainty equivalent & risk premium or I'm not understanding the question. ...
0
votes
0answers
16 views

Who is the first one to equate “rational” with “complete and transitive”?

MWG taught that, suppose that the menu is finite, "rational" is the same as "complete and transitive". But it seems that it does not cite any sources. Who said this first? vNM said in 1944 that their ...
0
votes
0answers
19 views

Order of Marginal Effects in Ordered Regression Model

I'm looking to validate my understanding of marginal effects on the probability of an ordered probit model. I don't understand how ME is calculated in respect to some alternatives. For example if I ...
0
votes
0answers
14 views

How do you calculate the cost of down time in production?

We are looking at a process that will significantly reduce down time in production for (at least) one of our products. In addition to the saved labor and material costs, is there a way to calculate ...
0
votes
0answers
16 views

How to integrate technology lifetime in NPV

I want to calculate and compare the NPV for different ways of producing a good X. The NPV should be calculated for 30 years. The following technologies can be used for production: Technology A, which ...
0
votes
0answers
21 views

Production for multiplant firm?

A multi-plant firm will never produce at a plant with an increasing marginal cost when they own another plant with a decreasing marginal cost. Is this true? My reasoning behind this is that firms ...
0
votes
0answers
21 views

Is the supply of a price-taking firm increasing in price?

Is the supply of a price-taking firm increasing in price? When the price goes up, this means that firms can make more profit. Therefore, they would want to increase their supply. Is there a way to ...
0
votes
0answers
36 views

Examples of textbook definitions of transaction costs, for a non-econ student

I'm not an econ major, neither am I taking it as a minor, however seemingly out of nowhere economics has jumped into my CS class when talking about the role of IT in reducing transaction costs of ...
0
votes
1answer
96 views

Study guide (and…) for “Intermediate Microeconomics with Calculus” by Varian

I have been googling study guides, solution manuals and other helpful material made by professors. But I have not found anything useful. Q: Do you guys know anything that will make the book easier ...
0
votes
0answers
24 views

How does definition of “price equilibrium with transfer” also include the case for the definition of “walrasian equilibrium”?

According to MWG and this answer, walrasian equilibrium is a special case of price equilibrium with transfers. However, since wealth distribution is predetermined in walrasian equilibrium, would it ...
0
votes
0answers
61 views

Special case for wealth allocation with quasilinear utility functions

Building on this question, regarding the answer from Bkay: Is it a general statement that when $m < \frac{p_y^2}{4 p_x}$, all income will be allocated to $x_M$? What about the case when the ...
0
votes
0answers
24 views

How to prove that the substitution effect is negative when price of another good is changed?

In Slutski equation, we have: $$\frac{\partial x_i(p,w)}{\partial p_j} = \frac{\partial h_i (p,u)}{\partial p_j} -\frac{\partial x_i(p,w)}{\partial w}x_j(p,w)$$ If $i \neq j$, the substitution effect ...
0
votes
0answers
31 views

Change in Consumer Surplus with two goods

Suppose we have two goods, price changes in the two are independent; having seen this question I am considering why the change in total Consumer Surplus is the sum of the change in Consumer Surplus ...
0
votes
0answers
27 views

Why hipothesis of perfect competition market implies fixed price of a product in every transaction?

My book says that from the axioms of perfect competition follows that the price is fixed in every transaction but it doesn't specify in which way it is possible to prove it. Besides, are all the ...
0
votes
0answers
11 views

Pricing Cross-Side Platform Mediated Markets

I have a question regarding the optimal pricing strategy for cross-side Platform Mediated Markets. Suppose we have two categories A and B, 100 potential customers each. How do I derive the optimal ...
0
votes
0answers
43 views

Purchasing Power Parity and Baskets of Goods

On the exact definition and understanding of "purchasing power parity" it depends what it means when the World Bank defines the “extremely poor” people of the world as those who are currently ...
0
votes
0answers
20 views

Would households rather live in a world with or without the unemployment insurance?

Would households rather live in a world with or without the unemployment insurance? What is a good example of world in which unemployment insurance is seen as a benefit, and not a hindrance?
0
votes
0answers
49 views

How to prove that the walrasian demand function $x(p,w)$ is continuous in $p$ and $w$?

If the utility function $u$ is continuous and satisfies local nonsatiation, and walrasian demand function $x(p, w)$ is a function (i.e. always map to only single values), how to prove that $x(p,w)$ is ...
0
votes
0answers
13 views

Overlapping Generations Model Pension System Question

Part 1 Pension System OLG Model with pension system: Each individual lives up to two periods. The surviving probability at period 2 is p. At period 1, the young household consumes c1, saves s1, and ...
0
votes
1answer
132 views

Check if a utility function represents a monotone preference

Given a function $u(x_1, x_2) = x_1 +x_2 + \min(2x_1, x_2)$, how do we mathematically prove that it monotonic or not? Is there is a general algebraic technique to show monotonicity of suchlike ...
0
votes
0answers
17 views

Numerical Solution Using Excel about optimal consumption of households

I'm not sure how to solve this problem. I'm given the discount factor, interest rate, probability of high income shock, and various income shock sizes that I need to use to compute optimal consumption....
0
votes
1answer
48 views

Why is the opportunity cost 0 in this case?

My book says that the opportunity cost of purchase of a specialized equipment that has no alternative use is zero and hence such an expenditure is a sunk cost. However, while calculating the user cost ...
0
votes
0answers
17 views

Under what conditions should I use a Social Accounting Matrix Model vs. Multimarket Model vs Computable General Equilibrium Models?

What are the differences between the SAM, multimarket and CGE models. When should I use one over the others?
0
votes
0answers
11 views

How can I model the impacts of improved agriculture technologies and food aid in a multimarket model?

Given a multimarket model for staple agricultural commodities wheat, rice, maize and sorghum, in a low-income economy, Im trying to figure out how I can use the multimarket framework to look at the ...
0
votes
0answers
20 views

Is oil supply really inelastic in the short term

Is oil supply really inelastic in the short run? Though it remains evident that in the short run, the known capacities of oil can't be increased and hence we can assume that there remains a upper cap ...
0
votes
0answers
16 views

CPI Bias with consumers using computers extensively

I was studying Microeconomics from Microeconomics by Pindyck and Rubinfeld where it was written that CPI calculated on Laspeyres index has overstated the cost of living for consumers who use computers ...
0
votes
0answers
30 views

Is this utility function continuous?

$u(x_1,x_2)=|x_1 −2|+x_2$ Is this function continuous? PS: The continuity theorem I use is this: Whenever for any $x^n$, $n \in N$ with $x^n \to x$ (i.e. $\lim_{n \to \infty} x^n = x$) and for any $...
0
votes
0answers
23 views

Notation: is it correct to write $x \succsim y \succsim z$ before using transitivity?

Let $\succsim$ complete and $x, y, z \in X$. Suppose $x \succsim y$ and $y \succsim z$. Is it OK to write $x \succsim y \succsim z$ just knowing this? Or, on the contrary, such expression ...
0
votes
0answers
26 views

Has contest theory ever been used to design real-world contests?

Contest theory, very much like auction theory, studies how people act in a contest and the properties of such a competition. There is a large literature that investigates different aspects of the ...
0
votes
0answers
45 views

Modeling risk aversion. Expected utility function

I want to model an Expected Utility Function for risk aversion but my problem is uncertainty in itself. I want a function(a special case) $$f(x, y) =\left\{\begin{matrix} h(bx^{1-C}+ay^{1-C}),C\neq 1\...
0
votes
0answers
15 views

How to determine the first bid for a Double-Bounded Dichotomous-Choice Contingent Valuation model?

I'm very new to the survey format of double-bounded dichotomous-choice for contingent valuation, so I apologize for my naive question. Could you please let me know how a researcher decides the initial ...
0
votes
0answers
51 views

How to show that a leontief utility function is homothetic?

usually what i do to show that a utility function is homothetic is by either showing that the function is homogeneous or if the MRS is homogeneous of degree 0. However the MRS is not defined. So im ...
0
votes
0answers
43 views

Why are prices made available to the public?

Price in micro is the point at which demand and supply meet. But in real world no one knows about the actual demand curve or supply curve. yet prices are set, so in a way there is a lot of costs being ...
0
votes
0answers
37 views

Moral hazard, bubbles, and economies of scale in limited companies and organizations

http://eprints.lse.ac.uk/100058/1/Goodhart_CEPR_DP13494.pdf What would be the disadvantage of limiting the liability to the product of the proportion of the company and the debt(a person with 2% of a ...
0
votes
0answers
24 views

Is a proft tax not distorting unless we know the opportunity cost?

A Profit tax where we actually know the Entire Cost Function Including the Opportunity cost(Time, Incommodation, best alternative for the easily monetized resources etc) is not distorting. But the ...
0
votes
0answers
10 views

If the government introduces import quota will prices change for imported goods

I am currently going through an introductory course to microeconomics. We are discussing how government interventions result in inefficiencies and dead-weight losses. One of the questions in concern ...
0
votes
0answers
57 views

Calculating equilibrium in a cobb-douglas long run, perfect competition scenario

Supposed there are a fixed number of 1000 identical firms in a PC industry, with each producing the same fraction with the same production function $$q_{i} = \sqrt{K \cdot L}$$ And market demand is ...
0
votes
1answer
70 views

Mathematical framework for modelling the relationship between price and sales of a product

In my job as a data scientist, I am required to model the relationship between the price of a product and the sales or number of unit sold. I am trying to build a simplistic model, the assumptions of ...
0
votes
0answers
33 views

Are marginal utilities or utilities compared?

Consider decision making in an economic model. Suppose that there is some utility and it is a function of consumption and leisure where leisure is full-time work, part-time work, or full-time ...
0
votes
0answers
36 views

Equilibrium price determination in a 2 commodity framework

Following are the set of equations describing the demand and supply of two goods X and Y: Demand functions: $$X_d = a_1 - b_1P_x + c_1P_y$$ $$Y_d = a_2 - b_2P_y +c_2P_x$$ $a_1,~ a_2,~ b_1,~ b_2,~ ...

1
4 5
6
7 8