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The highway fuel economy of a 2016 Lexus RX 350 FWD 6 cylinder automatic 5 speed using premium fuel is normally distributed random variable with

The highway fuel economy of a 2016 Lexus RX 350 FWD 6 cylinder automatic 5 speed using premium fuel is normally distributed random variable with a mean of u=25.25mpg and a standard deviation of o=2.00mpg.

What is the standard error of X, the mean from a random sample of 9 fill ups by one driver? Round answer to 4 decimals

Within what interval would you expect the sample mean to fall, with a 95% probability? Round answer to 4 decimals

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