In six test runs, a truck operated 8, 10, 15, 7, 9, and 11 miles with one gallon of gasoline. at the 95% level of confidence, is this sufficient evidence to show that the truck is operating at a mean rate of about 13.1 miles per gallon (confidence interval)

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Yuliana Simpson

23 September, 00:13

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Deon Arellano · Answer 1

The mean average of all the test runs are 10 miles. Thus, a mean rate of 10 miles per gallon would be more accurate.