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Four firm concentration ratio and HHI

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Five firms sell pez candy and differentiate in terms of customer service and flavors

name market share%
pez products 30
pez international 25
super pez 20
pez and associtate 15
piettes pez 10

a. what is the four firm concentration ratio?
b. calculate the HHI (Herfindahl Index)

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Solution Summary

The four firm concentration ratio and the HHI (Herfindahl Index) have been calculated.