Exercise 1 (45%): In the textbook, Model I is the least complicated way to define the relations in the real economy. Then the activity Y is a function of exogenous factors explained outside the model. The model is based on the data found in the National Accounts and is defined as follows: Y= Cp+ Ip +G+ NX Cp = c(Y-T)+C° Ip = 1° - bi NX = NX° - aY T=T°+ tY. Based on such a model I, we establish a general function for the real economy which can then be as follows: Y=T=C=0+a(C° +1° + NX° + G - cT° - bi) The elements that are part of the general macroeconomic relationship have the following values: Cp = 0.75 (Y - T) + 1400 Ip = 1250 - 90i NX = 2800 - 0.3Y %3D T= 1200 + 0.19Y %3D G = 2000 i = 1.5. %3D

ENGR.ECONOMIC ANALYSIS
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Exercise 1 (45%):
In the textbook, Model I is the least complicated way to define
the relations in the real economy. Then the activity Y is a
function of exogenous factors explained outside the model.
The model is based on the data found in the National
Accounts and is defined as follows:
Y= Cp + Ip +G+NX
Cp = c(Y-T)+C°
Ip = 1° - bi
NX = NX° - aY
T=T° + tY.
Based on such a model I, we establish a general function for
the real economy which can then be as follows:
Y=T==0+C + 1° + NX° + G - cT° - bi)
The elements that are part of the general macroeconomic
relationship have the following values:
Cp = 0.75 (Y - T) + 1400
Ip = 1250 - 90i
NX = 2800 - 0.3Y
%3D
T= 1200 + 0.19Y
G= 2000
i = 1.5.
%3D
Transcribed Image Text:Exercise 1 (45%): In the textbook, Model I is the least complicated way to define the relations in the real economy. Then the activity Y is a function of exogenous factors explained outside the model. The model is based on the data found in the National Accounts and is defined as follows: Y= Cp + Ip +G+NX Cp = c(Y-T)+C° Ip = 1° - bi NX = NX° - aY T=T° + tY. Based on such a model I, we establish a general function for the real economy which can then be as follows: Y=T==0+C + 1° + NX° + G - cT° - bi) The elements that are part of the general macroeconomic relationship have the following values: Cp = 0.75 (Y - T) + 1400 Ip = 1250 - 90i NX = 2800 - 0.3Y %3D T= 1200 + 0.19Y G= 2000 i = 1.5. %3D
Y: GDP
C: private consumption
G: public demand (expenditure)
In: private gross real investment
in: interest rate level
NX: net exports (trade balance)
T: tax level
t: tax rate
TO: income-independent tax
c: marginal consumption rate
b: investor's marginal interest rate sensitivity (shows reduction in
investments if interest rates increase by one unit)
a: marginal importrate
Transcribed Image Text:Y: GDP C: private consumption G: public demand (expenditure) In: private gross real investment in: interest rate level NX: net exports (trade balance) T: tax level t: tax rate TO: income-independent tax c: marginal consumption rate b: investor's marginal interest rate sensitivity (shows reduction in investments if interest rates increase by one unit) a: marginal importrate
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