Answer: a. Multiplier = 3.33
b. Stimulation = $2000 billion
Step-by-step explanation:
In this particular case , it's given:
Marginal propensity to consume(MPC) = 0.7
Government spending = $600 billion
Therefore, we can evaluate the multiplier using the following formula:


Multiplier = 3.33
Noe, in order to find the stimulation in the economy we will multiple the new government spending with the multiplier. We will get ;


Stimulation = $2000 billion