Refer to the data. The Herfindahl index for the industry is:

An externality is_____

a. an unintended by-product of market exchange that is allocated outside the market system b. an intended by-product of market exchange that is allocated outside the market system c. an unintended by-product of market exchange that is allocated within the market system d. an intended by-product of market exchange that is allocated within the market system

The income effect measures how

a. the quantity of a good supplied changes in response to a change in income b. the quantity of a good demanded changes in response to a change in the price of a good, with income constant c. far the budget line shifts due to a change in income d. the quantity of a good demanded changes in response to a change in purchasing power e. income changes when prices change, holding quantities demanded constant