One gallon of gas is put into each of 30 test cars. The resulting gas-mileage values of the sample are computed with mean of 28.5 gallons per mile, and standard deviation of 1.2 miles per gallon. What is the 95% confidence interval estimate of the mean mileage? O (28.42, 28.58) O (27.36, 29.64) (28.1, 28.9) O (27.3, 29.7) (28.46, 28.54)

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One gallon of gas is put into each of 30 test cars. The resulting gas-mileage values of the sample are
computed with mean of 28.5 gallons per mile, and standard deviation of 1.2 miles per gallon. What is the
95% confidence interval estimate of the mean mileage?
O (28.42, 28.58)
O (27.36, 29.64)
O (28.1, 28.9)
O (27.3, 29.7)
O (28.46, 28.54)
> Next Question
Transcribed Image Text:One gallon of gas is put into each of 30 test cars. The resulting gas-mileage values of the sample are computed with mean of 28.5 gallons per mile, and standard deviation of 1.2 miles per gallon. What is the 95% confidence interval estimate of the mean mileage? O (28.42, 28.58) O (27.36, 29.64) O (28.1, 28.9) O (27.3, 29.7) O (28.46, 28.54) > Next Question
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