The positive slope of the AS curve is a _____ phenomena, when the _____ are held constant.
a. long-run; business profits
b. short-run; government expenditures
c. short-run; costs of production
d. long-run; commodity prices
e. long-run; aggregate expenditures
Question 2
A theory asserts that consumers will purchase less of a good at higher prices than they will at lower prices, ceteris paribus. However, when the average price of cars increased throughout the 1990s, more cars were purchased. Which of the following best explains the apparent conflict between theory and data?
a. The ceteris paribus assumption is valid.
b. It is likely that variables other than the price and quantity of cars demanded were changing.
c. The theory is valid. However, the price and quantity data gathered by researchers was clearly measured incorrectly.
d. The theory must be invalid.
(A) Scratch test; patient is exposed to allergens through a light scratch on the skin; (B) Positive
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