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The mtcars object (a dataframe) is automatically available to you when you open an R/ RStudio session. Using this dataframe, what is the mean miles-per-gallon

The "mtcars" object (a "dataframe") is automatically available to you when you open an R/ RStudio session. Using this dataframe, what is the mean miles-per-gallon ("mpg") among all 32 car models in the data set? Round your answer to 2 decimal places. Do not include measurement units in your

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