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Suppose taxi fare from Logan Airport to downtown Boston is known to be normally distributed with a standard deviation of $2.30. The last seven times

Suppose taxi fare from Logan Airport to downtown Boston is known to be normally distributed with a standard deviation of $2.30. The last seven times John has taken a taxi from Logan to downtown Boston, the fares have been $24.20, $23.26, $23.85, $23.38, $23.41, $23.63, and $20.87. Construct a 95% confidence interval for the population mean taxi fare.

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