Answer:
b) $10 trillion
Explanation:
Price level = NGDP / RGDP = 2
NGDP / RGDP = 2
As per the quantity theory of money,
MV = PQ
M.(2) = 20
M = 10 trillion
Therefore, The money supply is $10 trillion.
Answer:
d. It is best measured using the statistic variance inflation factor (VIF).
Explanation:
Multicollinearity is an important issue in multiple regression model, having many independent/ explanatory variables. Multicollinearity is the situation in which two or more independent variables are highly correlated. It is problematic because it increases the standard error of independent variable coefficient & undermines its statistical significance
Variance Inflation Factor [VIF] is a check & corrective measure of multicollinearity.
- VIF as a multicollinearity check : It quantifies the correlation between one explanatory variable with other explanatory variables.VIF = 1 implies there is no multicollinearity (correlation between independent variables); VIF upto 5 implies there is moderate multicollinearity (correlation between independent variables). VIF > 5 implies high multicollinearity (correlation between independent variables)
- VIF as a multicollinearity correction : Calculating
= σ^2 / ![[TSS j (1 - R^2j)]](https://tex.z-dn.net/?f=%5BTSS%20j%20%281%20-%20R%5E2j%29%5D)
; where TSS = total sum of square of variable j , σ^2 = j variance, R^2 j = R^2 from regressing all other independent variable on variable j
Answer:
1. Increasing
2. A. The elasticity of private saving with respect to the after-tax real interest rate
B. The response of private saving to changes in the government budget deficit
C. The elasticity of investment with respect to the interest rate
Explanation:
1. It is difficult to implement both of these policies at the same time because reducing taxes on private spending has the effect of <u><em>Increasing</em></u> the government budget deficit.
A Government budget deficit is acquired when the government spends more than it earns. The Government earns money from taxes and if it spends more than it receives in taxes, that will lead to a deficit. If taxes on Private spending are reduced, this will lead to less tax revenue for the government thereby increasing the Deficit.
2. All of the listed options are useful in determining which policy would be a more effective way to raise investment.
The elasticity of private saving with respect to the after-tax real interest rate refers to how much private saving changes in reaction to a change in the tax rates. This can enable one decide how much investment will be expected if the Government reduces or increases taxes.
The response of private saving to changes in the government budget deficit is also a useful factor to look at because private savings reduce when government deficits reduce.
Also how much does investment change by due to interest rates. This will be important to note in terms of Private Investment to see if it will be beneficial to use it over reducing the government budget deficit given a certain interest rate.
