Investment (I) in a Simple Model without Government
In a simplified macroeconomic model without a government sector, investment (I) encompasses spending by firms on new equipment and commercial buildings, along with spending on new residential construction. A key assumption in this model is that the level of investment is fixed and does not change in response to variations in the current level of aggregate output.
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Introduction to Macroeconomics Course
Ch.3 Aggregate demand and the multiplier model - The Economy 2.0 Macroeconomics @ CORE Econ
The Economy 2.0 Macroeconomics @ CORE Econ
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Aggregate Demand Formula in a Closed Economy without Government
An economist is analyzing a hypothetical, self-contained economy where there is no governing body and no international trade. The total planned expenditure in this economy is determined solely by household spending on goods and services, and firms' spending on new capital like machinery and buildings. If a wave of consumer optimism leads households to increase their spending, what is the direct impact on this economy's total planned expenditure, assuming firms' spending plans remain unchanged?
Calculating Total Planned Expenditure in a Simplified Economy
Components of Total Spending in a Simplified Economy
In an economic model that excludes international trade and government activity, total planned spending is calculated by adding household consumption, business investment, and government purchases.
For a simplified economic model that only includes households and firms (with no government or international trade), match each type of economic activity to its correct category: 'Included in Total Planned Spending' or 'Excluded from Total Planned Spending'.
Identifying Components of Planned Expenditure
Critique of a Simplified Economic Model
In a simplified economic model that includes only households and firms, total planned expenditure is the sum of consumption spending and ____.
An economist is modeling a self-contained economy that includes only households and firms, with no government or international trade. For a given year, the following data is available:
- Household spending on goods and services: $800 billion
- Firms' planned spending on new machinery and buildings: $150 billion
- Firms' unplanned increase in inventories of unsold goods: $25 billion
- Value of goods sold to other countries: $50 billion
Based on the components of total planned expenditure for this specific type of economy, what is the calculated value?
An economist is analyzing a simplified, self-contained economy consisting only of households and firms, with no government or international trade. Which of the following scenarios would necessarily cause a decrease in this economy's total planned expenditure?
Consumption (C)
Investment (I) in a Simple Model without Government
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Exogenous Investment in the Simplified Multiplier Model
In a simplified economic model, firms' planned spending on new equipment and buildings is $200 billion, and spending on new residential construction is $50 billion. If the total current output of the economy increases from $1,000 billion to $1,200 billion, what will be the new level of total planned investment?
Evaluating an Economic Prediction
In a simplified macroeconomic model without a government, a significant increase in the economy's total output will directly cause a proportional increase in planned investment spending.
Relationship Between Investment and Output in a Simple Model