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 μ = 22.25 mpg and a standard deviation of σ = 1.50 mpg. (a) What is the standard error of ¯X¯, the mean from a random sample of 36 fill-ups by one driver? (Round your answer to 4 decimal places.) Standard error of ¯X¯ = _______ (b) Within what interval would you expect the sample mean to fall, with 99 percent probability? (Round your answers to 4 decimal places.) The interval is from _______ to _______.
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 μ = 22.25 mpg and a standard deviation of σ = 1.50 mpg. (a) What is the standard error of ¯X¯, the mean from a random sample of 36 fill-ups by one driver? (Round your answer to 4 decimal places.) Standard error of ¯X¯ = _______ (b) Within what interval would you expect the sample mean to fall, with 99 percent probability? (Round your answers to 4 decimal places.) The interval is from _______ to _______.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
100%
The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic 5-speed using premium fuel is a
(a) What is the standard error of ¯X¯, the mean from a random sample of 36 fill-ups by one driver? (Round your answer to 4 decimal places.)
Standard error of ¯X¯ = _______
(b) Within what interval would you expect the sample mean to fall, with 99 percent probability? (Round your answers to 4 decimal places.)
The interval is from _______ to _______.
![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 µ = 22.25 mpg
and a standard deviation of o = 1.50 mpg.
%3D
(a) What is the standard error of X , the mean
from a random sample of 36 fill-ups by one
driver? (Round your answer to 4 decimal
places.)
Standard error of X
(b) Within what interval would you expect the
sample mean to fall, with 99 percent
probability? (Round your answers to 4 decimal
places.)
The interval is from
to](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9687b9d7-a6e5-4274-859a-1ad47e7da2c7%2F715635d0-e0b5-4f10-86f8-0bd3ac66df2b%2Fybnsipk_processed.jpeg&w=3840&q=75)
Transcribed Image Text: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 µ = 22.25 mpg
and a standard deviation of o = 1.50 mpg.
%3D
(a) What is the standard error of X , the mean
from a random sample of 36 fill-ups by one
driver? (Round your answer to 4 decimal
places.)
Standard error of X
(b) Within what interval would you expect the
sample mean to fall, with 99 percent
probability? (Round your answers to 4 decimal
places.)
The interval is from
to
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