Question 3

=https%253A%252F%252Fnewconnect.mheducati... A* 16 omework: Chapter 8 (Sections 8.1 and 8.5) Saved Help Save & Exit Check my 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 J = 19.50 mpg and a standard deviation of o = 1.50 mpg. (a) What is the standard error of X , the mean from a random sample of 9 fill-ups by one driver? (Round your answer to 4 decimal places.) Book Standard error of X Hint Ask Print ferences (b) Within what interval would you expect the sample mean to fall, with 95 percent probability? (Round your answers to 4 decimal places.) The interval is from to C raw HOLOCOAL O W W