A student is interested in studying the impact of the number of books students referred to in a statistics course and the number of lectures they attended on the final grade on the course. A sample of 25 students is selected and the data are given below.
BOOKS
ATTEND
GRADE
2
17
60
3
18
54
1
17
62
5
20
59
2
12
44
1
13
40
3
17
96
4
19
90
5
22
97
2
22
54
5
22
91
1
12
48
3
18
91
1
12
65
4
21
82
5
14
61
3
18
54
3
13
46
1
8
64
5
22
90
a. Develop an estimated regression equation using the number of books referred to and the number of lectures attended to predict the final grade on the course.b. Joseph referred to 4 books and attended 19 lectures. What is his predicted final score on the course?
What will be an ideal response?
a. The following Excel output provides the estimated multiple linear regression equation with number of books referred to by students in a statistics course and the number of lectures they attended as the independent variables.
The estimated multiple linear regression equation is 
.
b. If Joseph refers to 4 books and attends 19 lectures, his predicted final score will be 
, or approximately 75.
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