-Listed in the above table are the total revenues for the firms in two different industries.Each industry has only eleven firms.Find the four-firm concentration ratio and the Herfindahl-Hirschman Index for each industry.
Definitions:
Investment
The purchase or construction of any new plant, equipment, or residential housing, or the accumulation of inventory; represented by I.
National Income
The total income earned by a country's population, including wages, profits, and rent, and the sum of all incomes earned by individuals and businesses.
Corporate Profits
The earnings generated by companies after covering their operational costs, taxes, and expenditures.
Proprietors' Income
The income earned by owners of unincorporated businesses, reflecting their production and sales efforts.
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