Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
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Question
- Use the table to calculate the Herfindal-Hirschman Index for the U.S. auto market. Would the FTC approve a merger between GM and Ford?

Expert Solution

Step 1
Herfindal – Hirschman Index is found by adding the squares of market share of each firm.
HHI = 192 + 172 + 142 + 112 + 102 + 72 + 52 + 42 + 32 + 32
= 361 + 289 + 196 + 121 + 100 + 49 + 25 + 16 + 9 + 9
HHI = 1175
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