Problem #1: The relationship between time to fracture of steel and the stress applied to steel was of interest in an experiment Suppose we have data from such an experiment involving steel. i stress time 1 2 3 4 3.4 5 6.9 7.8 45.4 51.1 37.2 42.5 5 10 38.1 (a) Which variable is the explanatory variable? (b) Which variable is the response variable? (c) Determine the least squares regression line. 6 7 8 14.9 16.9 18.3 36 30 26 9 10 18.9 29.9 28.4 20
Problem #1: The relationship between time to fracture of steel and the stress applied to steel was of interest in an experiment Suppose we have data from such an experiment involving steel. i stress time 1 2 3 4 3.4 5 6.9 7.8 45.4 51.1 37.2 42.5 5 10 38.1 (a) Which variable is the explanatory variable? (b) Which variable is the response variable? (c) Determine the least squares regression line. 6 7 8 14.9 16.9 18.3 36 30 26 9 10 18.9 29.9 28.4 20
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
Please solve (c)

Transcribed Image Text:Problem #1: The relationship between time to fracture of steel and the stress applied to steel was of interest in an experiment.
Suppose we have data from such an experiment involving steel.
i
stress
time
Problem #1(c):
1
2
3
4
5
6
7
3.4
5
6.9
7.8 10
14.9
16.9
18.3
18.9
45.4 51.1 37.2 42.5 38.1 36 30 26 28.4
(A) none of these (B) time (C) stress
Problem #1(a): Select ✓ ↑ Part (a) choices.
(a) Which variable is the explanatory variable?
(b) Which variable is the response variable?
(c) Determine the least squares regression line.
Enter the values of bo and b₁ (in that order) into the answer box below, separated with a comma.
Problem #1(b): Select ✓
(A) none of these (B) stress (C) time
Part (b) choices.
8 9
numbers correct to 4 decimals
10
29.9
20
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