ns) Expenditure (billions) 65.5 65.0 60 61.8 64.5 -0.5 62.1 64.0 61 62.4 63.5 -1.5 62.7 63.0 62 63.0 62.5 -2.5 63.3 62.0 63 63.6 61.5 3.5 63.9 61.0 64 64.2 64 5 60,5

ENGR.ECONOMIC ANALYSIS
14th Edition
ISBN:9780190931919
Author:NEWNAN
Publisher:NEWNAN
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
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Use the graph, table, and/or equation above.  If GDP is 65, then

 

 

unplanned investment is positive, and firms respond by increasing production in the future.

 

 

unplanned investment is positive, and firms respond by decreasing production in the future.

 

 

unplanned investment is negative, and firms respond by increasing production in the future.

 

 

unplanned investment is negative, and firms respond by decreasing production in the future.

 

 

unplanned investment is zero, the economy is at equilibrium, and firms do not change their production in the future.

The table on the left displays the relationship between GDP and Aggregate Expenditure:

| GDP (billions) | Aggregate Expenditure (billions) |
|----------------|----------------------------------|
| 60             | 61.8                             |
| 60.5           | 62.1                             |
| 61             | 62.4                             |
| 61.5           | 62.7                             |
| 62             | 63.0                             |
| 62.5           | 63.3                             |
| 63             | 63.6                             |
| 63.5           | 63.9                             |
| 64             | 64.2                             |
| 64.5           | 64.5                             |
| 65             | 64.8                             |
| 65.5           | 65.1                             |
| 66             | 65.4                             |

The graph on the right illustrates the relationship between GDP and Aggregate Expenditure with two lines:

- **Solid Line (Aggregate Expenditure line):** Represents the actual aggregate expenditure values as GDP increases from 60 to 66 billion dollars.
- **Dashed Line (Reference line or 45-degree line):** Represents a scenario where Aggregate Expenditure equals GDP, indicating all output is being spent. This line has a slope of 1.

The equation for Aggregate Expenditure is given as:
\[ AE = 25.8 + 0.6 \times Y \]
where \( Y \) is the GDP.

This equation shows that when GDP increases by 1 billion, Aggregate Expenditure increases by 0.6 billion, reflecting a marginal propensity to spend. The intercept is 25.8 billion, indicating autonomous expenditure levels when GDP is zero.
Transcribed Image Text:The table on the left displays the relationship between GDP and Aggregate Expenditure: | GDP (billions) | Aggregate Expenditure (billions) | |----------------|----------------------------------| | 60 | 61.8 | | 60.5 | 62.1 | | 61 | 62.4 | | 61.5 | 62.7 | | 62 | 63.0 | | 62.5 | 63.3 | | 63 | 63.6 | | 63.5 | 63.9 | | 64 | 64.2 | | 64.5 | 64.5 | | 65 | 64.8 | | 65.5 | 65.1 | | 66 | 65.4 | The graph on the right illustrates the relationship between GDP and Aggregate Expenditure with two lines: - **Solid Line (Aggregate Expenditure line):** Represents the actual aggregate expenditure values as GDP increases from 60 to 66 billion dollars. - **Dashed Line (Reference line or 45-degree line):** Represents a scenario where Aggregate Expenditure equals GDP, indicating all output is being spent. This line has a slope of 1. The equation for Aggregate Expenditure is given as: \[ AE = 25.8 + 0.6 \times Y \] where \( Y \) is the GDP. This equation shows that when GDP increases by 1 billion, Aggregate Expenditure increases by 0.6 billion, reflecting a marginal propensity to spend. The intercept is 25.8 billion, indicating autonomous expenditure levels when GDP is zero.
Expert Solution
Step 1
  1. an option is incorrect because, with GDP higher than Aggregate expenditure at 65, firms tend to have a negative unplanned investment to bring their production level and inventory level down, So at this level of GDP, firms will negative unplanned investment and not positive to decrease production.
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