Question

The computer-science aptitude score, *x*, and the
achievement score, *y* (measured by a comprehensive final),
were measured for 10 students in a beginning computer-science
course. The results were as follows. Calculate the estimated
standard error of regression, *s*_{b1}.
(Give your answer correct to two decimal places.)

x |
4 | 16 | 20 | 13 | 22 | 21 | 15 | 20 | 19 | 16 |

y |
18 | 18 | 23 | 35 | 28 | 27 | 26 | 29 | 16 | 26 |

You may need to use the appropriate table in Appendix B to answer
this question.

Answer #1

The statistical software output for this problem is :

standard error of regression = 6.08

Sb1 = 0.38

The computer-science aptitude score, x, and the
achievement score, y (measured by a comprehensive final),
were measured for 10 students in a beginning computer-science
course. The results were as follows. Calculate the estimated
standard error of regression, sb1.
(Give your answer correct to two decimal places.)
x
4
16
20
13
22
21
15
20
19
16
y
18
20
23
37
26
25
24
27
18
26

The computer-science aptitude score, x, and the achievement
score, y (measured by a comprehensive final), were measured for 10
students in a beginning computer-science course. The results were
as follows. Calculate the estimated standard error of regression,
sb1. (Give your answer correct to two decimal places.) x 4 16 20 13
22 21 15 20 19 16 y 20 20 25 37 28 25 26 27 18 28

The computer-science aptitude score, x, and the
achievement score, y (measured by a comprehensive final),
were measured for 10 students in a beginning computer-science
course. The results were as follows. Calculate the estimated
standard error of regression, sb1.
(Give your answer correct to two decimal
places.)
x
22
19
7
11
5
22
18
15
8
11
y
27
21
35
35
19
19
16
29
15
28

The computer-science aptitude score, x, and the achievement
score, y (measured by a comprehensive final), were measured for 10
students in a beginning computer-science course. The results were
as follows. Calculate the estimated standard error of regression,
sb1. (Give your answer correct to two decimal places.) x 22 13 9 10
17 21 7 15 6 14 y 34 35 33 15 23 29 26 24 24 30

The computer-science aptitude score, x, and the
achievement score, y (measured by a comprehensive final),
were measured for 20 students in a beginning computer-science
course. The results were as follows.
x
5
15
21
12
23
22
14
19
18
17
19
18
7
5
6
21
19
10
18
13
y
19
19
24
36
27
26
25
28
17
27
21
24
18
18
14
28
21
22
20
21
(a) Find the equation of the line of...

The computer-science aptitude score, x, and the achievement
score, y (measured by a comprehensive final), were measured for 20
students in a beginning computer-science course. The results were
as follows. x 5 17 21 12 21 20 14 21 18 17 19 16 9 7 6 21 17 10 18
15 y 19 19 24 36 27 26 25 28 17 27 21 24 18 18 14 28 21 22 20 21
(a) Find the equation of the line of...

The computer-science aptitude score, x, and the
achievement score, y (measured by a comprehensive final),
were measured for 20 students in a beginning computer-science
course. The results were as follows.
x
3
17
19
14
21
20
14
19
18
15
17
16
9
7
4
21
19
10
20
13
y
19
19
24
36
27
26
25
28
17
27
21
24
18
18
14
28
21
22
20
21
(a) Find the equation of the line of...

Person
number
X
Value
Y
Value
Person number
X
Value
Y
Value
Person number
X
Value
Y
Value
1
24
30
11
39
42
21
21
27
2
42
53
12
60
65
22
33
29
3
20
27
13
34
40
23
25
27
4
31
30
14
24
26
24
22
25
5
22
24
15
51
57
25
28
33
6
46
47
16
80
83
26
34
40
7
52
60
17
28
27
27
53...

The accompanying data represent the number of days absent, x,
and the final exam score, y, for a sample of college students in a
general education course at a large state university. Complete
parts (a) through (e) below.
LOADING...
No. of
absences, x
0
1
2
3
4
5
6
7
8
9
Final
exam score, y
88.9
86.4
83.7
81.5
78.9
73.2
63.7
71.8
65.1
66.8
PrintDone
Click the icon to view the absence count and final exam score...

*in r studio file
4. The director of admissions of a small college selected 120
students at random from the new freshman class in a study to
determine whether a student’s grade point average (GPA) at the end
of the freshman year (y) can be predicted from the ACT test score
(x). Estimate the simple linear regression of, y = β0 + β1x + ε,
using gpa.txt data and answer the following questions. (4
pts each)
(c) Obtain a predicted...

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