The highway fuel economy of a 2016 lexus rx 350 fwd 6-cylinder 3.5-l automatic 5-speed using premium fuel is a normally distributed random variable with a mean of 20.00mpg and a standard deviation of 2.00 (a) What is the standard error of X, the mean from a random sample of 36 fill-ups by one driver? standard error of X is 0.3333
(b) within what interval would you expect the sample mean to fall, with 99 percent probability? (round your answer to 4 decimals places.)
The Interval is from to