Machine 1 Machine 2 6.5 1.0 6.7 2.5 5.8 3.2 4.9 3.1 5.3 4.5 4.0 5.7 3.1 1.5 5.7 4.3 i. Find the estimated difference mean strength of tires produced using both machines [ X1-X2).
Machine 1 Machine 2 6.5 1.0 6.7 2.5 5.8 3.2 4.9 3.1 5.3 4.5 4.0 5.7 3.1 1.5 5.7 4.3 i. Find the estimated difference mean strength of tires produced using both machines [ X1-X2).
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
![Two new machines for producing tires have
been proposed by a worker in a manufacture.
The manufacture believes there will be no
difference in the strength of tires produced by
these machines. To test this hypothesis, a
sample of 9 tires produced by machine 1 and 7
tires produced by machine 2 were randomly
selected. It is known from previous experience
that the strength of a tire produced using
machine 1 is a normal random variable with
standard deviation equals to 3. And the
strength of a tire produced using machine 2 is
also a normal random variable with standard
deviation equals to 4. use the following
information to answer the following questions:
Machine 1 Machine 2
6.5
1.0
6.7
2.5
5.8
3.2
4.9
3.1
5.3
4.5
4.0
5.7
3.1
1.5
5.7
4.3
i. Find the estimated difference mean strength
of tires produced using both machines [
X1-X2] .
O0.06
ONone of these
O-2.18
02.07
O-0.25](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F874b3648-d2fe-4f6e-9f0d-9915122a0caa%2F5d4d3f2d-4dee-41dd-88f8-2c0368119061%2F1jm55pm_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Two new machines for producing tires have
been proposed by a worker in a manufacture.
The manufacture believes there will be no
difference in the strength of tires produced by
these machines. To test this hypothesis, a
sample of 9 tires produced by machine 1 and 7
tires produced by machine 2 were randomly
selected. It is known from previous experience
that the strength of a tire produced using
machine 1 is a normal random variable with
standard deviation equals to 3. And the
strength of a tire produced using machine 2 is
also a normal random variable with standard
deviation equals to 4. use the following
information to answer the following questions:
Machine 1 Machine 2
6.5
1.0
6.7
2.5
5.8
3.2
4.9
3.1
5.3
4.5
4.0
5.7
3.1
1.5
5.7
4.3
i. Find the estimated difference mean strength
of tires produced using both machines [
X1-X2] .
O0.06
ONone of these
O-2.18
02.07
O-0.25
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