Exam 10: Aggregate Demand I: Building the Is-Lm Model

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Consider the impact of an increase in thriftiness in the Keynesian-cross analysis. Assume that the marginal propensity to consume is unchanged, but the intercept of the consumption function is made smaller so that at every income level saving is greater. This will:

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Suppose Congress decides to reduce the budget deficit by cutting government spending. Use the Keynesian-cross model to illustrate graphically the impact of a reduction in government purchases on the equilibrium level of income. Be sure to label: i. the axes; ii. the curves; iii. the initial equilibrium values; iv. the direction the curve shifts; and v. the terminal equilibrium values. b. Explain in words what happens to equilibrium income as a result of the cut in government spending and the time horizon appropriate for this analysis.

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In the Keynesian-cross model with a given MPC, the government-expenditure multiplier the tax multiplier.

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In the Keynesian-cross model, actual expenditures equal:

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Based on the Keynesian model, one reason to support spending increases over tax cuts as measures to increase output is that:

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