( Please show work and use excel)

One of Professor Plum's colleagues suggested that coming to class/lectures may not be that important, and that it is attendance at review sessions that count. She suggested that perhaps students who attend class also attend review sessions, and the positive relationship between class attendance and final score is really driven by attendance of review sessions.Run a regression of final score on review session attendance

a. Interpret in words the coefficient on class attendance. b. Does your new model have more predictive power than the old one? How do you know? c.. Using your second model, if a student had taken 2 review sessions, what would you predict would be her final score?

Predicted Final Score =

Extra info:

Reviewsessions	classes	finalgrade
4	10	65
4	20	88
4	20	87
4	18	56
4	12	58
4	11	47
4	20	83
4	20	94
3	15	89
3	16	56
3	15	55
3	15	69
3	19	79
3	17	87
3	20	92
3	9	60
2	16	51
2	8	66
2	15	97
2	14	71
2	13	62
2	20	54
2	11	43
2	16	88
1	15	57
1	11	44
1	13	65
1	10	47
1	10	41
1	19	45
1	20	51
1	8	56
0	9	45
0	10	45
0	15	59
0	8	66
0	11	37
0	19	64
0	6	61
0	10	62