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A vehiche's fuel eficoiency is being tested. Four trials yuelded the following fuel efficiencies (fin miles per gallon): The mean hoet efficiency is 26.4 milos

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A vehiche's fuel eficoiency is being tested. Four trials yuelded the following fuel efficiencies (fin miles per gallon): The mean hoet efficiency is 26.4 milos per gallon. The data from this fuel effionency test represents a The variance of these tent feules is and the standard deviation is The coeficiont of variation for the fuel efficiency resultss is

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