Exam 21: The Simplest Short-Run Macro Model

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Consider a simple macro model with a constant price level and demand-determined output.If the marginal propensity to spend in such a model is 0.6,the simple multiplier is

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The aggregate expenditure (AE)function is an upward-sloping curve that describes

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Consider the simplest macro model with demand-determined output.Suppose an increase in business confidence leads firms to increase investment in new equipment by $30 million.The marginal propensity to spend in this economy is 0.9.What is the eventual total new expenditure in this economy due to the increase in investment?

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In the simple macro model,desired investment expenditure will generally fall as a result of which of the following changes?

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  FIGURE 21-2 Refer to Figure 21-2.Which of the following is the correct equation for the consumption function depicted in the figure? FIGURE 21-2 Refer to Figure 21-2.Which of the following is the correct equation for the consumption function depicted in the figure?

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Consider the following aggregate expenditure function: AE = $300 billion + (0.87)Y.Assuming that we have no government,no international trade and desired investment is autonomous and is equal to $56 billion,then which of the following is the correct statement of the consumption function?

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Suppose aggregate output is demand-determined.If the business community decreases its planned investment expenditures by $4 billion,causing equilibrium national income to fall by $20 billion,the marginal propensity to spend must be

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The table below shows disposable income and desired consumption for a closed economy with no government. The table below shows disposable income and desired consumption for a closed economy with no government.   TABLE 21-1 Refer to Table 21-1.The marginal propensity to consume is equal to TABLE 21-1 Refer to Table 21-1.The marginal propensity to consume is equal to

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When desired consumption exceeds disposable income,desired saving is ________; when desired consumption is less than the disposable income,desired saving is ________.

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Consider the following information concerning an economy with demand-determined output.There is no government or foreign trade. Consider the following information concerning an economy with demand-determined output.There is no government or foreign trade.   TABLE 21-7 Refer to Table 21-7.The simple multiplier in this economy is TABLE 21-7 Refer to Table 21-7.The simple multiplier in this economy is

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Consider a simple macro model with a constant price level.If the AE function is horizontal,then we know the simple multiplier is

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Consider a simple macro model with demand-determined output.At the equilibrium level of national income,

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  FIGURE 21-1 Refer to Figure 21-1.The average propensity to consume (APC)will be equal to one (1.0)when disposable income is equal to FIGURE 21-1 Refer to Figure 21-1.The average propensity to consume (APC)will be equal to one (1.0)when disposable income is equal to

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Suppose there is an increase in the marginal propensity to spend out of national income.The result will be

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Consider an exogenous increase in the real interest rate in the simple macro model.This will tend to cause ________ in desired consumption and ________ in desired investment.

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Consider a simple macro model with a constant price level and demand-determined output.If national income is above its equilibrium level,it is likely that inventories are ________,and so national income tends to ________.

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Suppose aggregate output is demand-determined.Suppose a decrease in autonomous investment expenditure of $20 million reduces equilibrium national income by $50 million.The marginal propensity to spend is equal to

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  FIGURE 21-2 Refer to Figure 21-2.If disposable income is $3000,desired consumption expenditure is equal to FIGURE 21-2 Refer to Figure 21-2.If disposable income is $3000,desired consumption expenditure is equal to

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Consider the following news headline: "Canadian business leaders fear reduced world demand for commodities".Which of the following correctly describes the likely effect in our simple macro model?

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Consider the following information describing a closed economy with no government and where aggregate output is demand determined.All dollar figures are in billions. Consider the following information describing a closed economy with no government and where aggregate output is demand determined.All dollar figures are in billions.   TABLE 21-4 Refer to Table 21-4.At the equilibrium level of national income,desired saving ($billions)will be TABLE 21-4 Refer to Table 21-4.At the equilibrium level of national income,desired saving ($billions)will be

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