Closed Economy Income-Expenditure Model Assignment | Homework For You

Consider a closed economy income-expenditure model of the economy where the country begins in a long-run equilibrium.

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•   Investment (I) and government spending (G) are fixed: I = 41.5, G = 26.

•   The income tax rate is t = 6.25%, so tax revenue equals T = tY .

•   The consumption function is C = 12 + 0.8Yd, where Yd = (1 − t)Y .

Homework For You

For the calculations below, write your answers as either a fraction or to two decimal places.

(a)   Write down the aggregate expenditure (AE) function using the above values. What is the value of the AE function’s intercept term? What is the value of the AE function’s slope term? What is equilibrium output?

(b)   Plot the aggregate expenditure function on a chart, with output (Y ) on the horizontal axis, in increments of 100 from 0 to 600.

(c)    In equilibrium, what is the level of consumption? What is the level of privatesaving?

(d)   What is the value of tax revenue, T? What is the value of government savings (T G)? Is the government running a surplus or deficit?

(e)   Suppose that the government reduces expenditure by 9.75 to 16.25. Suppose that this results in lower interest rates so that investment increases by 0.375 to 41.875. Following these changes, what is the new equilibrium level of output?

(f)     At the new level of equilibrium output, what is the new level of tax revenue? What is the new level of government savings? Is the surplus/deficit larger or smaller than it was in question (d)?

(g)   Simple income-expenditure models keep both the price level and interest rates fixed.In question (e), the interest rate was allowed to change. Discuss how allowing the price level to vary also would have changed output and tax revenue in equilibrium. Get Economics homework help today

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