Answer:
4400
Increase
c. An index of 10,000 corresponds to a monopoly firm with 100% market share
Explanation:
Here are the options to the last question
Why is the largest possible value of the Herfindahl index 10,000 ?
a. An index of 10,000 corresponds to 100 firms with a 1% market share each
b. An industry with an index higher than 10,000 is automatically regulated by the Justice Department
c. An index of 10,000 corresponds to a monopoly firm with 100% market share
HHI index = 60² + 20² + 20² = 4400
If one of the firms leaves the industry, the market share would be distributed between the two firms and this would cause the HHI index to increase as firm's concentration would increase
If only one firm operates in the industry, its market share would be 100% and its HHI index would be 100² = 10,000. For an industry to exist there has to be at least one firm operating in the industry,
