The following data represent the final grades obtained by five students in Mathematics, English, Psychology, and Soci Science. Subject Psychology 73 Mathematics English 57 94 81 73 68 Student Social Science 68 2 3 83 72 61 86 59 91 63 77 75 55 66 87 92 Use a 0.05 level of significance to test the hypothesis that (a) the courses are of equal difficulty; (b) the students have equal ability; (c) Use the multiple - range test, with a 0.05 level of significance, to analyze the mean grades obtained by the five students. The correct DMRT summarized result for (c) is Letters Students Student 2 Student 5 Means 88.50 80.50 68.75 a ab Student 3 Student 4 Student 1 *the same letter means equal means b. 67.75 64.75 Students Means Letters 88.50 80.50 Student 2 ab Student 5 a Student 3 68.75 a Student 4 Student 1 *the same letter means equal means 67.75 64.75 b C. Students Means Letters Student 2 88.50 80.50 Student 5 Student 3 Student 4 Student 1 *the same letter means equal means d. ab 68.75 bc 67.75 64.75 Students Мeans Letters Student 2 88.50 80.50 a ab Student 5 Student 3 68.75 67.75 Student 4 Student 1 64.75 the same letter means egmal means elul u
The following data represent the final grades obtained by five students in Mathematics, English, Psychology, and Soci Science. Subject Psychology 73 Mathematics English 57 94 81 73 68 Student Social Science 68 2 3 83 72 61 86 59 91 63 77 75 55 66 87 92 Use a 0.05 level of significance to test the hypothesis that (a) the courses are of equal difficulty; (b) the students have equal ability; (c) Use the multiple - range test, with a 0.05 level of significance, to analyze the mean grades obtained by the five students. The correct DMRT summarized result for (c) is Letters Students Student 2 Student 5 Means 88.50 80.50 68.75 a ab Student 3 Student 4 Student 1 *the same letter means equal means b. 67.75 64.75 Students Means Letters 88.50 80.50 Student 2 ab Student 5 a Student 3 68.75 a Student 4 Student 1 *the same letter means equal means 67.75 64.75 b C. Students Means Letters Student 2 88.50 80.50 Student 5 Student 3 Student 4 Student 1 *the same letter means equal means d. ab 68.75 bc 67.75 64.75 Students Мeans Letters Student 2 88.50 80.50 a ab Student 5 Student 3 68.75 67.75 Student 4 Student 1 64.75 the same letter means egmal means elul u
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The following data represent the final grades obtained by five students in Mathematics, English, Psychology, and Social
Science.
Subject
English
57
Student
Mathematics
Psychology
73
91
Social Science
1
68
61
83
94
86
3
72
81
63
59
4
55
77
73
68
66
87
5
92
75
Use a 0.05 level of significance to test the hypothesis that
(a) the courses are of equal difficulty;
(b) the students have equal ability;
(c) Use the multiple - range test, with a 0.05 level of significance, to analyze the mean grades obtained by the five students.
The correct DMRT summarized result for (c) is
a.
Students
Student 2
Student 5
Means
Letters*
88.50
a
80.50
ab
Student 3
68.75
b
Student 4
67.75
Student 1
*the same letter means equal means
64.75
b.
Students
Means
Letters
Student 2
88.50
80.50
68.75
ab
Student 5
a
Student 3
a
Student 4
67.75
b
Student 1
*the same letter means equal means
64.75
с.
Students
Means
Letters*
Student 2
88.50
a
Student 5
80.50
ab
Student 3
68.75
bc
Student 4
Student 1
*the same letter means equal means
67,75
64.75
d.
Students
Student 2
Student 5
Student 3
Student 4
Means
Letters*
88.50
80.50
a
ab
68.75
67.75
Student 1
64.75
*the same letter means equal means
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