Q1) One hundred Lower Wabash Tech students take 10-question multiple-choice test with 4 answers to each question, exactly one of which is right. All of the students are unprepared and should guess at each question.
Recognize random variable of interest, and give explanation for your answer. Find out the probability distribution of this random variable. i.e.,, find out the probability of getting each possible score.
You are given the following data.
|
Number of Absences
|
Final
Grade
|
|
0
|
97
|
|
1
|
90
|
|
2
|
75
|
|
2
|
82
|
|
3
|
77
|
|
3
|
68
|
|
4
|
60
|
|
5
|
58
|
|
6
|
46
|
i) Create a scatter plot for the data.
ii) Determine the correlation coefficient for the data.
iii) Determine the equation for regression line for the data, and forecast final grade of a student who misses 3.5 days.