题目内容

Assume a model with no government or foreign sector. If actual output is $13.1 trillion while aggregate demand is $13.2 trillion, we know that

A. the magnitude of unintended inventory adjustments is - $100 billion
B. the magnitude of unintended inventory adjustments is + $100 billion
C. the magnitude of unintended inventory adjustments is + $10 billion
D. the actual income level is above its equilibrium
E. there currently is an excess supply of goods and services

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Assume a simple model without any government. If an increase in autonomous investment of 40 leads to an increase in consumption of 160, then the marginal propensity to save is

A. 0.1
B. 0.2
C. 0.25
D. 0.4
E. 0.8

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In a model with no government or foreign sector, if saving is defined as S = - 200 + (0.1)Y and investment is Io = 200, what is the equilibrium level of consumption?

A. 3800
B. 3600
C. 1800
D. 2000
E. 1000

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In a model with no government or foreign sector, if autonomous consumption is Co = 80, investment is Io = 70, and the marginal propensity to save is s = 0.25, equilibrium income is

A. 150
B. 200
C. 225
D. 600
E. 750

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The expenditure multiplier measures

A. the number of steps it takes to move from one equilibrium to another
B. the rise in saving resulting from a rise in income
C. the change in investment resulting from a change in income
D. the change in induced consumption caused by a change in income
E. none of the above

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