Mathematics, 21.05.2021 17:10 hcllxxhhlpcj
A vehicle owner interested in her vehicle’s fuel economy calculated the gas mileage in miles per gallon (mpg) each time she filled her tank, for several years. Here are the mpg values for a random sample of 20 of these records. Suppose that the standard deviation is known to be σ = 3.5 mpg.
Required:
Find the 95% confidence interval for the mean of gas mileage for this vehicle.
Answers: 3
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A vehicle owner interested in her vehicle’s fuel economy calculated the gas mileage in miles per gal...
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