Suppose Taxi Fare from Logan Airport to Downtown Boston Is

Multiple Choice

Suppose taxi fare from Logan Airport to downtown Boston is known to be normally distributed with a standard deviation of $2.50.The last seven times John has taken a taxi from Logan to downtown Boston,the fares have been $22.10,$23.25,$21.35,$24.50,$21.90,$20.75,and $22.65.What is a 95% confidence interval for the population mean taxi fare?

A) [$17.4571,$27.2571]
B) [$20.5051,$24.2091]
C) [$20.8027,$23.9115]
D) [$21.6571,$23.0571]