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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.