Of the following high-income countries, which has the highest female life expectancy at age 65?

In an economy with money, as opposed to barter, people are more likely to specialize in the production of goods and services

Indicate whether the statement is true or false

Consider two industries, industry Q and industry Z. In industry Q there are 10 companies, each with a market share of 10% of total sales. In industry Z, there are eight companies

One company has a 65% market share and each of the other seven firms has a market share of 5%. a. Calculate the four-firm concentration ratio for each industry. b. Calculate the Herfindahl-Hirschman Index (HHI) for each industry. c. What do the values of the two concentration measures imply about the degree of market power in the two industries?