Using matlab to compute if you can.
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Question
100%
Using matlab to compute if you can.

Transcribed Image Text:A strain gauge is a device that measures elongation and is used to infer forces. A gauge
has been bonded to a steel beam, and is being calibrated. The resistance of the strain
gauge is converted into a voltage appearing on a meter. Known forces (X, in kN) are
applied, and voltmeter measurements (Y, in V) are as follows:
X
6
7
8
9
10
1 2 3 4 5
11 12 13 14
Y 4.4 4.9 6.4 7.3 | 8.8 || 10.3 | 11.7 || 13.2 || 14.8 || 15.3 || 16.5 || 17.2 || 18.9| 19.3
(a) Fit a linear regression line Y = â +6X through the data and estimate the tension
(force) in the beam when the meter reading is 13.8 V. Plot your results with the
fitted line superimposed.
Hint: Use polyfit for the fitting & polyval for the evaluation.
(b) Estimate the residual standard deviation, Sg and find a 95% confidence interval for
the regression slope. Is this slope statistically different from zero? What simplifica-
tion can we make if it is?
Hint: The 100(1-a) % confidence interval for the regression slope b is given by
bta/2n-21
where SE is the standard deviation of the residual errors, and Sx is the standard
deviation of the z-data.
S
||
||
Σ
HIE
SE
Sx √n-2
1
(34-3x)²
Σ(x₁ - x)² = 2² (2)²
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