The website fueleconomy.gov allows drivers to report the miles per gallon of their vehicle. The data in Table 2 show the reported miles per gallon of 2011 Ford Focus automobiles for 16 different owners. Obtain a point estimate of the population mean miles per gallon of a 2011 Ford Focus.

Approach Treat the 16 entries as a simple random sample of all 2011 Ford Focus automobiles. To find a point estimate of the population mean, compute the sample mean miles per gallon of the 16 cars.

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Table 2 35.7 37.2 34.1 38.9 32.0 41.3 32.5 37.1 37.3 38.8 38.2 39.6 32.2 40.9 37.0 36.0