Q1. Suppose the consumption function in the United States economy is represented by the following equation: C = 200 + .5 YD, where Y₁ = Y - T and T = 200. (a) What is the level of consumption in this economy if Yo = 0? Briefly explain how individuals "pay for" this consumption when Y₁ = 0. (b) Given the above parameters, calculate the level of consumption if Y = 1200. (c) Suppose Y increases to 1300. What happens to the level of Yo as Y increases to 1300 (i.e. calculate the change in YD)? (d) What happens to the level of consumption when Y rises to 1300 (i.e. calculate the change in consumption)? (e) Using the change in Yo and the change in consumption you calculated, what is the marginal propensity to consume (MPC) for this economy? Is this the same as the parameter of the consumption function that represents the marginal propensity to consume? (f) Write out the saving function for this economy. (HINT: S = Yo - C. Substitute for C from the information above and simplify the right side of the equation). (g) What is the level of saving when Yo=0? Explain how and why this occurs. (h) What is the marginal propensity to save for this economy? How do you know?

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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Q1.
Suppose the consumption function in the United States economy is represented by the
following equation:
C = 200 + .5 YD, where Y₁ = Y - T and T = 200.
(a) What is the level of consumption in this economy if Yo = 0? Briefly explain how individuals
"pay for" this consumption when Y₁ = 0.
(b) Given the above parameters, calculate the level of consumption if Y = 1200.
(c) Suppose Y increases to 1300. What happens to the level of Yo as Y increases to 1300
(i.e. calculate the change in YD)?
(d) What happens to the level of consumption when Y rises to 1300 (i.e. calculate the change
in consumption)?
(e) Using the change in Yo and the change in consumption you calculated, what is the
marginal propensity to consume (MPC) for this economy? Is this the same as the
parameter of the consumption function that represents the marginal propensity to
consume?
(f) Write out the saving function for this economy. (HINT: S = Yo - C. Substitute for C from
the information above and simplify the right side of the equation).
(g) What is the level of saving when Yo=0? Explain how and why this occurs.
(h) What is the marginal propensity to save for this economy? How do you know?
Transcribed Image Text:Q1. Suppose the consumption function in the United States economy is represented by the following equation: C = 200 + .5 YD, where Y₁ = Y - T and T = 200. (a) What is the level of consumption in this economy if Yo = 0? Briefly explain how individuals "pay for" this consumption when Y₁ = 0. (b) Given the above parameters, calculate the level of consumption if Y = 1200. (c) Suppose Y increases to 1300. What happens to the level of Yo as Y increases to 1300 (i.e. calculate the change in YD)? (d) What happens to the level of consumption when Y rises to 1300 (i.e. calculate the change in consumption)? (e) Using the change in Yo and the change in consumption you calculated, what is the marginal propensity to consume (MPC) for this economy? Is this the same as the parameter of the consumption function that represents the marginal propensity to consume? (f) Write out the saving function for this economy. (HINT: S = Yo - C. Substitute for C from the information above and simplify the right side of the equation). (g) What is the level of saving when Yo=0? Explain how and why this occurs. (h) What is the marginal propensity to save for this economy? How do you know?
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