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Разбор задачи

Consider an economy in which the goods market is characterized by the following set of : • Consumption: C = 150 + 0.75(Y→ T ) • Investment: I= I • Government Spending: G= G • Taxes: T= T (a) What is the di!erence between endogenous and exogenous

  • Предмет: Экономика
  • Автор: Кэмп
  • #Политическая экономия
  • #Теория макроэкономики
Consider an economy in which the goods market is characterized by the following set of : • Consumption: C = 150 + 0.75(Y→ T ) • Investment: I= I • Government Spending: G= G • Taxes: T= T (a) What is the di!erence between endogenous and exogenous

Условие:

Consider an economy in which the goods market is characterized by the following set of\nequations:
• Consumption: C = 150 + 0.75(Y→ T )
• Investment: I= I
• Government Spending: G= G
• Taxes: T= T
(a) What is the di!erence between endogenous and exogenous variables? Identify the\nendogenous and exogenous variables from the equations above.
(b) Why is not possible to find unique values for the endogenous variables using the equa-\ntions above?
(c) Adjust the model, and compute the equilibrium level of income, Y , assuming I = 50,\nG = 100 and T = 100. For that value of income calculate the corresponding levels of\nprivate and public saving and check if their sum equals investment spending.
(d) Suppose now that government spending increases from 100 to 125. How will this a!ect\nthe equilibrium value of income? Based on that, what can you infer about the value\nof the government spending multiplier?

Решение:

(a) Endogenous and Exogenous Variables

Endogenous variables are those whose values are determined within the model. They depend on other variables in the system. In this case, the endogenous variable is:

  • YY (Income), as it is determined by the consumption, investment, and government spending equations.

Exogenous variables are those whose values are determined outside the model. They are taken as given and do not depend on the model's other variables. In this case, the exogenous variables are:

  • II (Investment)
  • GG (Government Spending)
  • TT (Taxes)

(b) Uniqueness of...

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