Question
Suppose we have the following data on scores for two exams: By hand, test to see...
- Suppose we have the following data on scores for two exams: By hand, test to see whether the variances for the two examinations are equal. Test at the 0.05 level. Please show hand written answer and excel answer.
EXAM 1 EXAM 2
90 90
96 92
80 88
70 84
77 86
82 78
75
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
Suppose we have the following data on scores for two exams: EXAM 1. EXAM 2 ...
Suppose we have the following data on scores for two
exams:
EXAM 1. EXAM 2
90
90
96
92
80
88
70
84
77
86
82
78
75
a. Test to see whether the variances for the two examinations are
equal. Test at the 0.05 level.
b. Using your result in (a), conduct a t-test to see whether the
means for the two examinations are equal. Test...
Below is the data scores for two exams. See whether the variances for the two examinations...
Below is the data scores for two exams. See whether the
variances for the two examinations are equal at 0.05 level. Include
step-by-step process (hypothesis, what you formula used to solve
equal variance and hypothesis conclusion).
EXAM
1 EXAM
2
90
90
96
92
80
88
70
84
77
86
82
78
75
The Test Scores for a Statistics course are given in the Excel below. The data (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.
What is the F-Stat?
EXAM1
EXAM2
EXAM3
FINAL
73
80
75
65.86667
93
88
93
80.16667
89
91
90
78
96
98...
Below represent scores on an exam, each entry one score for one student 40 99 59...
Below represent scores on an exam, each entry one score for one
student
40
99
59
98
63
63
64
65
67
35
67
67
68
70
71
71
71
46
72
72
60
73
74
74
74
75
97
75
62
76
76
76
76
76
77
57
77
98
77
63
78
78
78
79
79
80
80
80
80
80
81
81
92
81
93
82
82
83
83
83
83
83
83
83
84
84
84...
Tales of Two Classes A TALE OF TWO CLASSES SMITH &n
Tales of Two Classes
A TALE OF TWO CLASSES
SMITH
JONES
Test 1 Test
2
Test 1
Test 2
82
80
80
94
90 88
70
82
78 80
76
74
68
76
86
78
92 86
84
88
88
70
80
90
80 74
80
84
96 84
76
80
70 66
72
76
82 78
80
98
66 72
76
86
94 90
82
94
72 96
60
80
1. Using the...
please answer ALL the question 1--The diastolic blood pressure (in mm Hg) of 84 patients with...
please answer ALL the question
1--The diastolic blood pressure (in mm Hg) of 84 patients with
hypertension was:
88 98 78 84 77 81 90 82 75 72 92 85 92 77 84 77 82 100
92 88 74 80 95 90 87 80 83 77 86 80 88 90 79 82 93 100
80 85 96 85 90 84 82 95 88 97 80 88 94 92 88 96 90 103
88 86 84 90 98 88 86 95...
Using the accompanying Student Grades data, construct a scatter chart for midterm versus final exam grades...
Using the accompanying Student Grades data, construct a scatter
chart for midterm versus final exam grades and add a linear
trendline. What is the model? If a student scores 7878 on the
midterm, what would you predict her grade on the final exam to
be?
Student
Midterm
Final Exam
1
75
64
2
85
91
3
80
68
4
88
83
5
76
60
6
67
80
7
78
74
8
95
94
9
67
61
10
93
87
11...
Sample scores from four different statistics class sections are shown below. Run an ANOVA test on...
Sample scores from four different statistics class sections are
shown below. Run an ANOVA test on them and answer the following
questions:
Class 1
Class 2
Class 3
Class 4
95
79
77
81
99
68
91
96
75
84
84
68
76
78
84
89
82
74
75
78
97
93
82
75
93
95
82
88
83
88
85
98
86
95
96
59
What conclusion can we make about the hypothesis test?
Suppose the previous mean exam score was 70. We would like to know whether or not...
Suppose the previous mean exam score was 70. We would like to
know whether or not the mean score has increased.
Answer the following question using any approximate method by
stating the necessary assumptions.
The data are here:
75 70 88 80 80 66 65 68 85 80 78 72 69 75 86 96 77 81 76 80
66 65 78 87 88 75 85 84 66 78 76 74 85 64 76 75 76 74 81 76
(a) State...
Student Grades Student Test Grade 1 76 62 2 84 90 3 79 68 4 88...
Student Grades
Student
Test
Grade
1
76
62
2
84
90
3
79
68
4
88
84
5
76
58
6
66
79
7
75
73
8
94
93
9
66
65
10
92
86
11
80
53
12
87
83
13
86
49
14
63
72
15
92
87
16
75
89
17
69
81
18
92
94
19
79
78
20
60
71
21
68
84
22
71
74
23
61
74
24
68
54
25
76
97...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 6 minutes ago
asked 46 minutes ago
asked 59 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 2 hours ago
asked 2 hours ago