Question: In an effort to improve quality, AT&T has been trying to control pollution problems. Problem causes and their relative seriousness, as a percentage of the

In an effort to improve quality, AT&T has been trying to control pollution problems. Problem causes and their relative seriousness, as a percentage of the total, are as follows: chlorofluorocarbons, 61%; air toxins, 30%; manufacturing wastes, 8%; other, 1%. Draw a Pareto diagram of these causes.

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