Business faculty at a prestigious community college wanted to evaluate the infuence of Netflix on student academic performance. After careful consideration, the faculty decided to conduct a prelimary study to see if they could justify a more detailed analysis. The preliminary study follows:
Sixty (60) students were selected for two sections of a Business Adminstration class. The students were selected based on their previous performance in an introductory level course. In order to enroll in one of the sections, students had to earn an 85 or higher in the introductory course.
The students in Section 1 agreed to spend at least 15 hours per week preparing for class. During the 15 hours, the students were required to work either in the library or a comparable, oncampus study location that was completely free of distractions (i.e., no smartphones, musical devices, or any other digital media).
The students in Section 2 were given free, unlimited access to Netflix and encouraged to use their account as much as possible when not preparing for class. The students were not required to spend any time preparing for class.
Both sections were taught by the same professor using the same materials. Great care was taken to insure that both classes received approximately the same course content at the same time.
The following data shows the test scores for each student on the first test:
Section #1 
Section #2 

COLUMN 1 
COLUMN 2 
COLUMN 3 
COLUMN 4 
COLUMN 5 
COLUMN 6 
COLUMN 7 
Student # 
Student # 

A 
99 
Freshman 
A' 
89 
Freshman 

B 
89 
Freshman 
B' 
81 
Freshman 

C 
84 
Sophomore 
C' 
94 
Sophomore 

D 
96 
Sophomore 
D' 
66 
Freshman 

E 
100 
Freshman 
E' 
81 
Freshman 

F 
87 
Sophomore 
F' 
87 
Sophomore 

G 
100 
Sophomore 
G' 
70 
Freshman 

H 
100 
sophomore 
H' 
77 
Sophomore 

I 
89 
Sophomore 
I' 
87 
Freshman 

J 
100 
Sophomore 
J' 
68 
Sophomore 

K 
81 
Sophomore 
K' 
84 
Freshman 

L 
93 
Freshman 
L' 
82 
Sophomore 

M 
93 
Sophomore 
M' 
68 
Sophomore 

N 
92 
Sophomore 
N' 
87 
Freshman 

O 
81 
Sophomore 
O' 
79 
Sophomore 

P 
91 
Freshman 
P' 
75 
Sophomore 

Q 
98 
Freshman 
Q' 
76 
Sophomore 

R 
83 
Freshman 
R' 
88 
Sophomore 

S 
84 
Freshman 
S' 
75 
Freshman 

T 
82 
Freshman 
T' 
67 
Sophomore 

U 
88 
Freshman 
U' 
67 
Freshman 

V 
92 
Sophomore 
V' 
84 
Freshman 

W 
89 
Sophomore 
W' 
82 
Sophomore 

X 
83 
Freshman 
X' 
88 
Freshman 

Y 
87 
Sophomore 
Y' 
90 
Sophomore 

Z 
97 
Freshman 
Z' 
90 
Freshman 

AA 
98 
Freshman 
AA' 
79 
Sophomore 

AB 
82 
Freshman 
AB' 
89 
Freshman 

AC 
96 
Freshman 
AC' 
71 
sophomore 

AD 
91 
Sophomore 
AD' 
66 
Freshman 
100  90 
A 
89  80 
B 
79  70 
C 
69  60 
D 
< 69 
F 
A 
4 points 
B 
3 points 
C 
2 points 
D 
1 point 
F 
0 points 
1/ What is the weighted mean grade point average for Section 1
________ and Section 2 ________
2/ Construct a boxplot for each class and upload here.
3/ What is the range for Section 1 ________ and Section 2
________
4/ What is the variance for Section 1 ________ and Section 2
__________
5/ What is the standard deviation for Section 1 ________ and
Section 2
__________
6/ What is Pearson's Coefficient of Skewness for Section 1________
and Section 2
__________
7/ Use your answers from question 17. Describe the skewness for
Section 1_______
and Section 2_______
8/ Use Chebyshev's theorem to find at least what percentage of
students earned within +/ two (2) standard deviations in Section
1_______ and +/ three (3) standard deviations in Section 2
______
9/ Using the statistical analysis above, summarize the potential
impact that free, unlimited access to Netflix may have on the
academic performance of students.
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