The halfway fuel economy of a 2016 Lexus RX 350 four wheel drive 6 cylinder 3.5 l automatic 5-speed using premium fuel is a normally distributed random variable with a mean of 25.75 mpg and the standard deviation of =2.75 mpg.a. What is the standard error of X, the mean from a random sample of 36 Phillips by one driver and the large X has a line on the top of it.b. Within what interval would you expect the sample mean to fall with a 99% probability round your answers to four decimal places.The interval is from ____to____ し 27万The highway fuel economy of a 2016 Lexus RX 350 FWD 6-cylinder 3.5-L automatic 5-speed usingpremium fuel is a normally distributed random variable with a mean of u = 25.75 mpg and a standarddeviation of o = 2.75 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.)%3DStandard error of X3.5-h=25.75d.nareomabl-27536(b) Within what interval would you expect the sample mean to fall, with 99 percent probability?(Round your answers to 4 decimal places.)a/2a1-a99The interval is from.01005to7,005.

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Answered: The halfway fuel economy of a 2016…

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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The halfway fuel economy of a 2016 Lexus RX 350 four wheel drive 6 cylinder 3.5 l automatic 5-speed using premium fuel is a normally distributed random variable with a mean of 25.75 mpg and the standard deviation of =2.75 mpg.

a. What is the standard error of X, the mean from a random sample of 36 Phillips by one driver and the large X has a line on the top of it.

b. Within what interval would you expect the sample mean to fall with a 99% probability round your answers to four decimal places.

The interval is from ____to____

し 27万
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 = 25.75 mpg and a standard
deviation of o = 2.75 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.)
%3D
Standard error of X
3.5-h
=25.75
d.nareomabl
-275
36
(b) Within what interval would you expect the sample mean to fall, with 99 percent probability?
(Round your answers to 4 decimal places.)
a/2
a
1-a
99
The interval is from
.01005
to
7,005.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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