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# (Solved): A renowned car manufacturer, ElectricDrive, has been challenged by a rival company, EcoMiles, clai ...

A renowned car manufacturer, ElectricDrive, has been challenged by a rival company, EcoMiles, claiming that their electric vehicles have lower operating costs. A data analyst examines the mean and standard deviation of monthly charging and maintenance expenses for all ElectricDrive electric vehicle owners, revealing values of \$17.09 and \$3.87, respectively. To investigate this challenge, a random sample of 100 ElectricDrive electric vehicle owners is selected, and their monthly charging and maintenance expenses are recalculated using the cost data provided by EcoMiles. The sample yields an average monthly expense of \$17.55 with a standard deviation of \$3. Assuming the standard deviation remains the same at \$3.87, can we conclude that there is a significant difference in the average operating expenses between ElectricDrive electric vehicle owners and EcoMiles electric vehicle owners?

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