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An airplane manufacturer is trying to prove the fuel economy of their small plane. Nine have been tested. The results in gallons per hour are
An airplane manufacturer is trying to prove the fuel economy of their small plane. Nine have been tested. The results in gallons per hour are in the following table. 8.4 8.2 8.0 8.4 8.3 8.0 7.6 7.6 7.5 What is the standard error of the mean
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