M Question 3 - 7-2 Homework: Chapter 8 (Sections 8.1 and 8.5) - Connect 7-2 Homework: Chapter 8 (Sections 8.1 and ... i Saved Help Save & Exit Submit Check my work 3 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 = 22.00 mpg and a standard deviation of o = 1.25 mpg. 5 (a) What is the standard error of X , the mean from a random sample of 25 fill-ups by one driver? (Round your answer to 4 points decimal places.) Skipped Standard error of X eBook Hint Ask Print References (b) Within what interval would you expect the sample mean to fall, with 98 percent probability? (Round your answers to 4 decimal places.) The interval is from to Mc Graw