Question: The Test Scores for a Statistics course are given in the Excel below. The data (X1, X2, X3, X4) are for each student. X1 =
The Test Scores for a Statistics course are given in the Excel below.
The data (X1, X2, X3, X4) are for each student.
X1 = score on exam #1
X2 = score on exam #2
X3 = score on exam #3
X4 = score on final exam
Your professor wants to know if all tests are created equal.
At a 5% level of Significant, run a test to determine if the mean difference between the test scores is the same.
EXAM1
73
93
89
96
73
53
69
47
87
79
69
70
93
79
70
93
78
81
88
78
82
86
78
76
96
EXAM2
80
88
91
98
66
46
74
56
79
70
70
65
95
80
73
89
75
90
92
83
86
82
83
83
93
EXAM3
75
93
90
100
70
55
77
60
90
88
73
74
91
73
78
96
68
93
86
77
90
89
85
71
95
FINAL
65.8666666666667
80.1666666666667
78
84.9333333333333
61.5333333333333
43.7666666666667
64.5666666666667
49.8333333333333
75.8333333333333
71.0666666666667
61.1
61.1
79.7333333333333
65.8666666666667
64.1333333333333
83.2
63.7
79.3
76.7
68.9
76.7
75.8333333333333
75.8333333333333
64.5666666666667
83.2
ANSWER CHOICES
A. The mean difference between the test scores is the not same because the p-value = 0.9948
B. The mean difference between the test scores is the same because the p-value = 0.0052
C. The mean difference between the test scores is the same because the p-value = 0.9948
D. The mean difference between the test scores is the not same because the p-value = 0.0052
Step by Step Solution
There are 3 Steps involved in it
Get step-by-step solutions from verified subject matter experts
Study Help