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b) The following data were used to construct the histograms of the number of days required for two courier services companies to deliver their customers'

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b) The following data were used to construct the histograms of the number of days required for two courier services companies to deliver their customers' parcel. Company 11 10 9 10 11 11 10 11 10 10 A Company 8 10 13 7 10 11 10 7 15 12 B Based on the coefficient of variation, compare which company provides more consistent and reliable delivery time

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