Saved Help Save & E Chapter 8 (Sections 8.4 through... Che 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 u = 20.25 mpg and a standard deviation of o = 2.25 mpg. (a) What is the standard error of the mean from a random sample of 16 fill-ups by one driver? (Round your answer to 4 decimal places.) Standard error of

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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 u = 20.25 mpg and a standard deviation of o = 2.25 mpg.
(a) What is the standard error of
, the mean from a random sample of 16 fill-ups by one driver? (Round your answer to 4 decimal places.)
Standard error of
(b) Within what interval would you expect the sample mean to fall, with 90 percent probability? (Round your answers to 4 decim
places.)
The interval is from
to
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Transcribed Image Text:<: Chapter 8 (Sections 8.4 through... i Saved Help Save & Exi Check 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 u = 20.25 mpg and a standard deviation of o = 2.25 mpg. (a) What is the standard error of , the mean from a random sample of 16 fill-ups by one driver? (Round your answer to 4 decimal places.) Standard error of (b) Within what interval would you expect the sample mean to fall, with 90 percent probability? (Round your answers to 4 decim places.) The interval is from to < Prev Next > 3 of 10 の to search (8) 近
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