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. O [20.7, 35.7] (24.5, 29.1)

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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.
%3D
O [20.7, 35.7]
O (24.5, 29.1)
O [26.2, 30.2]
O [22.6, 34.8]
O [24.8, 31.6]
Transcribed Image Text: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. %3D O [20.7, 35.7] O (24.5, 29.1) O [26.2, 30.2] O [22.6, 34.8] O [24.8, 31.6]
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