She was told that she needs to get plenty of sleep the night before the exam. She is interested in the relationship between the number of hours of sleep a student gets before the exam and the score earned on the exam. She collects information from 10 other appropriate? O No, there is no clear pattern in the residual plot. O Yes, there is no clear pattern in the residual plot. O No, the student who got the most sleep had a students who have already taken the exam as shown in the table. negative residual. O Yes, there are more negative residuals (6) than positive residuals (4). Amount of Score Sleep (Hours) 30 28 7.5 7.5 32 20 21 4 8.5 21 23 4.5 24 31

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Based on the residual plot, is the linear model
appropriate?
A student is preparing to take a standardized exam.
She was told that she needs to get plenty of sleep the
night before the exam. She is interested in the
relationship between the number of hours of sleep a
student gets before the exam and the score earned
on the exam. She collects information from 10 other
students who have already taken the exam as shown
in the table.
O No, there is no clear pattern in the residual plot.
O Yes, there is no clear pattern in the residual plot.
O No, the student who got the most sleep had a
negative residual.
O Yes, there are more negative residuals (6) than
positive residuals (4).
Amount of
Score
Sleep (Hours)
3
7.5
30
28
32
20
21
7.5
4
8.5
21
23
24
31
2
4.5
Transcribed Image Text:Based on the residual plot, is the linear model appropriate? A student is preparing to take a standardized exam. She was told that she needs to get plenty of sleep the night before the exam. She is interested in the relationship between the number of hours of sleep a student gets before the exam and the score earned on the exam. She collects information from 10 other students who have already taken the exam as shown in the table. O No, there is no clear pattern in the residual plot. O Yes, there is no clear pattern in the residual plot. O No, the student who got the most sleep had a negative residual. O Yes, there are more negative residuals (6) than positive residuals (4). Amount of Score Sleep (Hours) 3 7.5 30 28 32 20 21 7.5 4 8.5 21 23 24 31 2 4.5
She fits a least-squares regression line to the data
and determines the equation of the line is ŷ =26-
0.18x, where ĝ is the score earned on the exam
and x is the number of hours of sleep the night before
the exam. The residual plot is given.
4.
8.
10
Amount of Sloop (Hours)
Residual
Transcribed Image Text:She fits a least-squares regression line to the data and determines the equation of the line is ŷ =26- 0.18x, where ĝ is the score earned on the exam and x is the number of hours of sleep the night before the exam. The residual plot is given. 4. 8. 10 Amount of Sloop (Hours) Residual
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