Question
. The following data represent the final exam scores of 18 male students and 18 female...
. The following data represent the final exam scores of 18 male students and 18
female students.
Male: 68, 68, 72, 73, 65, 74, 73, 72, 68, 65, 73, 66, 71, 68, 74, 66, 71, 65
Female: 59, 75, 70, 56, 66, 75, 68, 75, 62, 60, 73, 61, 75, 74, 58, 60, 73, 58
Is there any significant difference between the average exam scores of male and
female students? Explain your answer.
Homework Answers
Answer #1
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Consider the below vector x, which you can copy and paste directly into Matlab. The vector...
Consider the below vector x, which you can copy and
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x = [61 52 63 58 66 92 64 55 76 60 70 78 76 73 45 63
97 70 100 76 50 64 42 100 67 81 81 59 68 62 72 99 66 76 81 59 47 84
67 75 63 86 73 44 51 69 48 74 61...
StudentNO Gender Height in inchese 1 Female 63 2 Female 64.0 3 Male 67.0 4 Female...
StudentNO
Gender
Height in inchese
1
Female
63
2
Female
64.0
3
Male
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4
Female
59
5
Male
60
6
Female
61
7
Female
62
8
Female
63
9
Female
63
10
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64
11
Male
64
12
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65
13
Female
65
14
Female
65
15
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65
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17
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67
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Male
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67.5
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Using the accompanying Student Grades data, construct a scatter chart for midterm versus final exam grades...
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Student
Midterm
Final Exam
1
75
64
2
85
91
3
80
68
4
88
83
5
76
60
6
67
80
7
78
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8
95
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9
67
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10
93
87
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Suppose a professor gives an exam to a class of 40 students and the scores are...
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35
44
46
47
47
48
49
51
53
54
55
55
57
57
57
58
59
59
59
59
60
60
60
60
60
62
62
62
64
68
69
70
72
73
73
75
75
77
82
88
a. Find each of the
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Mean:
Median:
Standard deviation:
Z-score for a student who...
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Males
Females
85
79
76
82
53
73
62
57
49
99
63
72
52
75
78
75
50
87
61
53
73
35
59
65
67
82
80
75
83
80
66
62
66
63
96
77
40
60
87
62
71
84
66
82
74
70
73...
Female Height (inches) 64 62 70 72 60 69 65 66 65 66 62 62 69...
Female Height (inches)
64
62
70
72
60
69
65
66
65
66
62
62
69
64
65
64
68
63
72
69
60
68
67
63
61
62
65
68
63
59
Male Height (inches)
68
72
69
67
72
70
75
77
65
66
72
69
72
69
73
67
66
66
68
72
-Get the 5-Number Summary for the female heights and male
heights, then use them to draw two Boxplots on the same graph. A
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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...
A statistics instructor wonders whether significant differences exist in her students’ final exam scores in her...
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exist in her students’ final exam scores in her three different
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Assume exam scores are normally distributed.
Section 1
Section 2
Section 3
60
75
86
94
64
68
56
73
65
57
71
77
60
83
91
86
67
79
66
76
94
85
70
56
82
80
50...
Refer to the accompanying data set and construct a 95% confidence interval estimate of the mean...
Refer to the accompanying data set and construct a 95%
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81
82
72
94
52
57
59
66
51
54
62
80
52
77
74
85
51
89
62
57
73
35
61
64
62
87
80
74
80
79
63
62
63
67
97
76
43
60
85
65
72
86
66
85
73
69
72 ...
Use ? to approximate σ. Use a 5% level of significance. Data: 69 62 75 66...
Use ? to approximate σ. Use a 5% level of significance.
Data:
69
62
75
66
68
57
61
84
61
77
62
71
68
69
79
76
87
78
73
89
81
73
64
65
73
69
57
79
78
80
79
81
73
74
84
83
82
85
86
77
72
79
59
64
65
82
64
70
83
89
69
73
84
76
79
81
80
74
77
66
68
77
79
78
77
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