Question
the test scores of 12 randomly selected students in a class are 85, 79, 84, 94,...
the test scores of 12 randomly selected students in a class are 85, 79, 84, 94, 96, 78, 88, 91, 76, 99, 95, and 81. Assume the scores follow a normal distribution, calculate 90% confidence interval for the standard deviation of the scores for the class. (sample variance = 60.88)
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
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?
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...
Since we are attempting to examine the behavior of a class of students, the behavior of...
Since we are attempting to examine the behavior of a class of
students, the behavior of an individual (as we calculated in
objective 1) is really of little concern to us. Assuming that there
are 30 students enrolled for a typical class, use the central limit
theorem to calculate the following:
• What would be the shape of the
distribution of the average class grade of these 30 students?
• What would be the average class
average of...
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...
The following scores on the midterm exam in a math class were recorded. Find IQR. 93...
The following scores on the midterm exam in a math
class were recorded. Find IQR. 93 81 59 69 82 73 61 77 95 84 88 71
85 97 63 72 89 80 60 98 91 62 78 83 76 81 94 66 83 96
The data file ExxamScores shows the 40 students in a TOM 3010 course exxam scores for...
The data file ExxamScores shows the 40 students
in a TOM 3010 course exxam scores for the Middtermm and Final
exxam. Is there statistically significant evidence to show that
students score lower on their final exxam than middtermm exxam?
Provide the p-value for this analysis.ROUND TO 4 DECIMAL
PLACES.
ExxamScores
Student ID #
Middtermmm
Final
56065
97
64
79499
95
85
59716
89
72
83504
79
64
77735
78
74
57760
87
93
78204
83
70
81177
94
79
54398...
The scores for the test # 3 for Abe’s stat class from 9 randomly selected students...
The scores for the test # 3 for Abe’s stat class from 9 randomly
selected students are as such 86 ,70, 95, 90, 77, 88, 85, 92, 90.
By using 95% confidence level, find the confidence interval for the
average test score for test # 3 for all Abe’s stat class.
7) A) E =5.85 B) E = 6.28 C) E =6.02 D) E = 5.89
8) A) 79.87 < < μ 91.91 B) 83.24 < < μ 121.27 C)...
The following data represents the exam scores of students in Econ 220 VV22, which is one...
The following data represents the exam scores of students in
Econ 220 VV22, which is one of several sections of Econ 220 in a
college. You can take this as a sample.
Student
Score
1
82
2
70
3
50
4
60
5
75
6
65
7
55
8
80
9
85
10
90
11
95
12
94
13
35
14
40
15
65
16
95
17
91
18
55
19
65
20
76
21
86
22
96...
Make a relative frequency histogram using 6 classes; between what two values could you expect to...
Make a relative frequency histogram using 6 classes; between
what two values could you expect to find 88.9% of the data,
according to Chebyshev.
Sample scores: 84, 67,80, 74, 81, 91, 95, 85, 82, 99, 77, 78,
88, 94, 82, 95, 71, 77, 91, 88, 96, 85, 70, 82, 88, 75, 90, 85, 89,
95, 85, 65, 86, 91
Below are the final exam scores of 25 introductory statistics students. 42, 53, 63, 76, 76,...
Below are the final exam scores of 25 introductory statistics
students.
42, 53, 63, 76, 76, 78, 80, 85, 86, 86, 87, 87, 88, 88, 89, 89, 90,
91, 92, 94, 95, 95, 96, 96, 97
Create a box plot of the distribution of these scores.Please
indicate the values the boundaries and the middle line of the box
represent respectively, use the 1.5 IQR rule to identify outlier(s)
if any, and show how you determine the values the two whiskers...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 6 minutes ago
asked 13 minutes ago
asked 16 minutes ago
asked 36 minutes ago
asked 56 minutes 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
asked 2 hours ago