Answered: 6) Test the claim that men and women…

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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6) Test the claim that men and women have the same mean Grade. Men Women n = n = x = x = s = s 7) Create a confidence interval for the men’s Quiz grades and also one for the women's Quiz grades. What do these two confidence intervals indicate? Men Women n = n = x = x = s = s 8) Divide the data into 3 groups by Homework scores: 0-65, 66-89 and 90-100. Use ANOVA to test the claim that Exam scores are the same for these 3 groups. HW 0-65 HW 66-89 HW 90-100 n = n = x = x = s = s = 9) Divide the data into 2 groups: those with Quiz scores under 87 and those with Quiz scores 87 or more. Test the claim that the two groups have the same mean Grades. Quiz < 87 Quiz 87 or more 10) Looking back at #1-9, which one shows the biggest effect on a student's grade? Explain

Gender
F
F
M
F
F
M
M
M
M
M
M
M
M
M
F
F
M
M
F
M
M
F
M
M
M
F
M
M
M
M
F
M
F
F
F
F
Medians
Quizzes
97
59
58
98
68
99
99
77
94
98
95
98
95
96
59
99
98
98
59
81
98
79
73
82
87
69
95
74
80
85
87
96
92
86
67
94
89
Homework
96
68
61
55
79
80
97
85
55
64
95
61
59
17
66
92
100
94
75
100
100
50
80
89
70
93
87
50
90
66
69
94
78 89 45 71 77
Reviews
90
45
57
46
89
93
97
53
80
85
83
54
95
27
72
98
97
93
62
97
94
63
74
67
70
77
67
64
83
52
77
79
64
83
35
40
75
Exams
91
78
82
90
96
90
90
85
95
99
96
87
96
81
93
103
100
98
84
104
100
96
70
86
78
85
91
87
99
87
74
100
103
104
72
97
92
Grade
94
64
67
77
85
92
95
75
86
92
92
78
90
63
76
100
99
96
71
96
98
78
73
81
77
80
85
74
89
75
77
93
71
92
58
78
80

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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