Ig = 80

question 79

Multiple Choice

Ig = 80
SA=−80 + 0.4Y
(Advanced analysis) The equations refer to a private closed economy, where Ig is gross investment, S
Is saving, and Y is gross domestic product (GDP) . In equilibrium, consumption will be

• A) $400.
• B) $280.
• C) $320.
• D) $360.

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Definitions:

Research Hypothesis

An educated guess or prediction made for the purpose of testing through scientific research, stating a potential outcome or relationship.

Critical Values

Thresholds in hypothesis testing which, if exceeded by the test statistic, indicate that the null hypothesis can be rejected.

Standard Deviation

A metric that quantifies how spread out a dataset is in comparison to its average value.

Standard Error

The standard deviation of the sampling distribution of a statistic, often used to calculate confidence intervals or test hypotheses.