In the table below are data on five different industries and the market shares for each of the firms in the industry. Assume that there is no foreign competition, entry into the industry is difficult,...

In the table below are data on five different industries and the market shares for each of the firms in the industry. Assume that there is no foreign competition, entry into the industry is difficult, and that no firm in each industry is on the verge of bankruptcy.

Calculate the Concentration ration (CR4) and Herfindahl-Hirschman index (HHI) for each industry. Which industry has the most monopoly power and which industry has the least monopoly power based on HHI?

If thesixthfirm in the aviation industry sought to merge with thefifthfirm in that industry, would the government be likely to challenge the merger? Find post-merger HHI and compare with pre-merger HHI