An increase in income will tend to cause which of the following?
A) an increase in the monetary base (H)
B) a reduction in H
C) an increase in the interest rate
D) a reduction in the money multiplier
E) none of the above
The evidence shows that, over the last 25 years, spending on research and development
in the rich countries has
A) decreased dramatically.
B) decreased slightly.
C) remained constant.
D) increased in absolute numbers, but decreased as a percentage of GDP.
E) increased as a percentage of GDP.
Suppose the United States economy is represented by the following equations:
Z = C + I + G C = 500 + .5YD T = 600 I = 300
YD = Y – T G = 2000
a. Given the above variables, calculate the equilibrium level of output. Hint: First
specify (using the above numbers) the demand equation (Z) for this economy. Second,
using the equilibrium condition, equate this expression with Y. Once you have done
this, solve for the equilibrium level of output. Using the ZZ-Y graph (i.e., a graph that
includes the ZZ line and 45-degree line with Z on the vertical axis, and Y on the
horizontal axis), illustrate the equilibrium level of output for this economy.
b. Now, assume that consumer confidence decreases causing a reduction in autonomous
consumption (c0) from 500 to 400. What is the new equilibrium level of output? How
much does income change as a result of this event? What is the multiplier for this
economy?
c. Graphically illustrate the effects of this change in autonomous consumption on the
demand line (ZZ) and Y. Clearly indicate in your graph the initial and final equilibrium
levels of output.
d. Briefly explain why this reduction in output is greater than (in absolute terms) the