The combined cityinighway fuel economy of a 2023 Lenus UX 250 Hybrid is a normally distributed random variable weis a mean of
\mu =26.25mpg and a standard deviation of
\sigma =3.00mpg.
(a) What is the standard error of
\bar{x} , the mean from a random sample of 9 flups by one driver?
Note: Round your answer to
4 decimal places.
?
Standard error of
x
(b) Within what interval would you expect the sample mean to fall, with 95 percent probability?
Note: Round your answers to 4 decimal places.
?
The interval is from
0