Course grade and study time A graduate teaching assistant for an introductory statistics course wanted to investigate the relationship between a student's self-reported weekly study time (in hours, fraction allowed) for this course and their course grade (out of 100 points). She collected information from 44 students. The data from the first 4 cases are shown in the table: Weekly study time (in hours) 6.7 8.4 6.3 11.2 **** course_grade Assume that the conditions for linear regression are met. The TA fitted the least squares line to the data and generated a scatterplot with the least squares line (see below). 80 06 TITT 80 70 09 Course grade (points) 69.55 73.47 75.87 90.86 O wwww O d O 00 o opto 00 。° O O o O oo O 00 O O ( Complete the following R commands that produce the scatterplot with the overlying least squares line. Reminder: R is case-sensitive. > mod-1m (course_grade study_hours, data-StatCourse) > plot ( > abline(, 4 12pt 4 BIUA 12pt AA I Y Paragraph What is the intercept of the least squares line? Your final answer should be a number. Please show your work. Y BIUA Paragraph T Y LEX x, EE FER- AIE, EE B D DO M 1 -
Course grade and study time A graduate teaching assistant for an introductory statistics course wanted to investigate the relationship between a student's self-reported weekly study time (in hours, fraction allowed) for this course and their course grade (out of 100 points). She collected information from 44 students. The data from the first 4 cases are shown in the table: Weekly study time (in hours) 6.7 8.4 6.3 11.2 **** course_grade Assume that the conditions for linear regression are met. The TA fitted the least squares line to the data and generated a scatterplot with the least squares line (see below). 80 06 TITT 80 70 09 Course grade (points) 69.55 73.47 75.87 90.86 O wwww O d O 00 o opto 00 。° O O o O oo O 00 O O ( Complete the following R commands that produce the scatterplot with the overlying least squares line. Reminder: R is case-sensitive. > mod-1m (course_grade study_hours, data-StatCourse) > plot ( > abline(, 4 12pt 4 BIUA 12pt AA I Y Paragraph What is the intercept of the least squares line? Your final answer should be a number. Please show your work. Y BIUA Paragraph T Y LEX x, EE FER- AIE, EE B D DO M 1 -
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
What is the intercept of the least square lines. Your final answer should be number. Show work
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cases are now in the Labic.
Weekly study time
(in hours)
6.7
8.4
6.3
11.2
****
Assume that the conditions for linear regression are met. The TA fitted the least
squares line to the data and generated a scatterplot with the least squares line
(see below).
course_grade
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Course grade
(points)
69.55
73.47
75.87
90.86
O
Driving
A research team studied the relationship between light alcohol consumption and
driving when the driver is already sleep deprived. 62 men were recruited and
asked to complete a simulated two-hour highway drive in the lab. They were
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What is the intercept of the least squares line? Your final answer should be a
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Transcribed Image Text:Y
D
↑
D
Z
>
1
1
2
3
4
5
6
7
ش
13
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L
cases are now in the Labic.
Weekly study time
(in hours)
6.7
8.4
6.3
11.2
****
Assume that the conditions for linear regression are met. The TA fitted the least
squares line to the data and generated a scatterplot with the least squares line
(see below).
course_grade
2 ۲
Q ..... W ....
X
command
06
س
80
F2
ص
70
09
398
S >>> D
L
#3
E
Course grade
(points)
69.55
73.47
75.87
90.86
O
Driving
A research team studied the relationship between light alcohol consumption and
driving when the driver is already sleep deprived. 62 men were recruited and
asked to complete a simulated two-hour highway drive in the lab. They were
randomly assigned to two treatment groups. Each group has 31 men. In the first
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1
12pt
12pt
JE
M
1
DII
F8
B IU
K
What is the intercept of the least squares line? Your final answer should be a
number. Please show your work.
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Write the null and alternative hypotheses. You must use the statistical notation
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Course grade and study time
A graduate teaching assistant for an introductory statistics course wanted to
investigate the relationship between a student's self-reported weekly study time
(in hours, fraction allowed) for this course and their course grade (out of 100
points). She collected information from 44 students. The data from the first 4
cases are shown in the table:
Weekly study time
(in hours)
6.7
8.4
6.3
11.2
Assume that the conditions for linear regression are met.. The TA fitted the least
squares line to the data and generated a scatterplot with the least squares line
(see below).
2 ۲
S
course_grade
W ....
X
ommand
F2
ص
90
î
80
70
09
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Course grade
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Complete the following R commands that produce the scatterplot with the
overlying least squares line. Reminder: R is case-sensitive.
> mod-1m (course_grade study_hours, data=StatCourse)
> plot (
> abline (
12pt
8 A
12pt
Hiind pred instr
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What is the intercept of the least squares line? Your final answer should be a
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Transcribed Image Text:키
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4
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Course grade and study time
A graduate teaching assistant for an introductory statistics course wanted to
investigate the relationship between a student's self-reported weekly study time
(in hours, fraction allowed) for this course and their course grade (out of 100
points). She collected information from 44 students. The data from the first 4
cases are shown in the table:
Weekly study time
(in hours)
6.7
8.4
6.3
11.2
Assume that the conditions for linear regression are met.. The TA fitted the least
squares line to the data and generated a scatterplot with the least squares line
(see below).
2 ۲
S
course_grade
W ....
X
ommand
F2
ص
90
î
80
70
09
#
E
D
Course grade
(points)
69.55
73.47
75.87
90.86
O
80
F3
ي
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ی
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4
9.7
Cis
р
O
R
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F
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E
Complete the following R commands that produce the scatterplot with the
overlying least squares line. Reminder: R is case-sensitive.
> mod-1m (course_grade study_hours, data=StatCourse)
> plot (
> abline (
12pt
8 A
12pt
Hiind pred instr
M
DII
F8
B I U
What is the intercept of the least squares line? Your final answer should be a
number. Please show your work.
XSKN
B I U A
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