Macroeconomics 15th Edition by James Gwartney, Richard Stroup, Russell Sobel, David Macpherson

تمرين 1

Indicate whether the following statements are true or false:
a. "For the economy as a whole, inventory investment can never be negative."
b. "The net investment of an economy must always be positive."
c. "An increase in GDP indicates that the standard of living of people has risen."