The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic speed using premium fuel is a normally distributed random variable with a mean of u= 26.75mpg and a standard deviation of o=3.50 mpg.  a. What is the standard error of X, the mean from a random sample of 36 full ups by one driver?(Round your answer to 4 decimal places. ) Standard error of X=  b. Within what interval would you expect the sample mean to fall, with 99 percent probability?  (Round your answers to 4 decimal places.).  the interval is from _____to ____

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