Students at a local college are conducting independent tests to determine the distance a particular...

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Students at a local college are conducting independent tests to determine the distance a particular make of automobile will travel while consuming only 1 gallon of gas. A sample of n = 8 cars is tested and a mean of 26.8 miles is obtained. The standard deviation is 2.8 miles. Assuming that the data come from a normal population, find the 95% confidence interval for the mean distance traveled by all such cars using 1 gallon of gas.

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