Concentration ratio and the herfindahl-hirschman index

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1. Let us assume that in a market for PCs, Lenovo has a market share of 30%, Dell 25%, HP 20%, Toshiba 20% and Samsung 5%. Calculate the 4-firm concentration ratio and the Herfindahl-Hirschman Index for the market. Is this market an oligopoly or competitive according to each of these two measures?

2. How does rivalry in the marketplace relate to the latter's economic competitiveness?

Reference no: EM131877071

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