ECON 1001 Lecture Notes - Autarky

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pinkjackal290

6 Sep 2018

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Chapter 8: saving, investment, and the financial system. Consider the breakdown of national income as follows: Y= c + i + g + nx. If the economy is closed, so that net exports are zero, this reduces to: But the left hand side of the equation above is the definition of national saving: In other words, in a closed economy, savings must equal investment. This is just another version of the insight. From the above, we can write national saving as: S = (y t c) + (t g)

Related Questions

5. Saving and net flows of capital and goods In a closed economy, saving and investment must be equal, but this is not the case in an open economy. In the following problem, you will explore how saving and investment are connected to the international flow of capital and goods in an economy. Before delving into the relationship between these various components of an economy, you will be asked to recall some relationships between aggregate variables that will be useful in your analysis. Recall the components that make up GDP. National income (Y) equals total expenditure on the economy's output of goods and services. Thus, where C = consumption, I = investment, G = government purchases, X = exports, M = imports, and NX = net exports: Y = Also, national saving is the income of the nation that is left after paying for . Therefore, national saving (S) is defined as: S = Rearranging the previous equation and solving for Y yields Y = . Plugging this into the original equation showing the various components of GDP results in the following relationship: S = This is equivalent to S = , since net exports must equal net capital outflow (NCO, also known as net foreign investment). Now suppose that a country is experiencing balanced trade. Determine the relationships between the entries in the following table, and enter these relationships using the following symbols: > (greater than), < (less than), or = (equal to). Outcomes of Balanced Trade Imports Exports 0 Net Exports Y C+I+G Investment Saving Net Capital Outflow 0

ochreduck773

The following is a model of a closed economy with nogovernment.
C = 44 + 0.6YD I = 12

where C = desired consumption expenditure (in billions of $), YD =disposable
income (in billions of $), and I = desired investment expenditure(in billions
of $).

a) What is autonomous C equal to?
b) What is induced C equal to if national income (Y) is 120?
c) What would happen to C if Y increased by 10?
d) What is the saving function equal to?
e) How can private saving (S) be negative? Explain.
f) What would happen to S if Y increased by 10?
g) At what level of Y is the average propensity to consume (APC)equal to 1?
h) How does the APC change as Y increases?
i) How does the average propensity to save (APS) change as Yincreases?
j) What is aggregate expenditure function equal to?
k) Is the economy in equilibrium when Y is 150? If no, then by howmuch are
the economyâs inventories changing?
l) What are the equilibrium levels of Y, C, S, and YD?
m) At equilibrium, what do the injections and the withdrawals inthis
economy equal?
n) Give two reasons why investment would change from I = 12 to I =18.
o) What are the new equilibrium levels of Y, C, S, and YD ifinvestment
changed from I = 12 to I = 18?
p) What is the size of the (simple) multiplier?
q) What is the change in Y in the 3rd round of the multipliereffect as a
result of the change in investment in part n?

harlequinseal728

Suppose the basic consumption level of Primaland is $10,000 million and that people save only 10% of their income. Government spending there is $5,000 million and the budget deficit is balanced while exports are $700 but Trade is balanced as well. The investment level is $6000 million; however, investment is independent of income and interest rate.

Aggregate Demand Z is defined as Z = C+I+G+(X-M) and the equilibrium condition is Y=Z.

The disposable income is Y_D=(Y-T).

Consumption is C=C₀+c₁Y_D and Investment is: I=I₀.

a. Set up the model for this economy.

b. Calculate and graph the equilibrium level of income for this economy.

c. What is the multiplier of this Economy?

d. What is the level of consumption at equilibrium?

e. What is the saving level if S= -C₀+0.1Y_D? What is it equal to?

Consumer confidence drops and people decide to "save" more or "consume" less by lowering their basic consumption to $8,000

f. What happens to the equilibrium Y = income and what happens to save, EXPLAIN.

azurearmadillo894

ECON 1001 Lecture Notes - Autarky

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