Question

you want to estimate the difference between the average grades on a certain math exam before students take the associated math class. (Hopefully you do better after taking the class right?) You take random samples of 5 students who have taken the class and 5 students who have not taken the class. You get the following results (grades).

Not Taken

54

25

73

23

42

taken

82

76

98

43

38

Answer #1

You want to estimate the average difference between grades on a
certain math exam before students take the associated math class
and after they take the associated math class. (hopefully you do
better after taking the class, right?) you take a random sample of
5 students and get the following results.
Grade before
54
25
73
23
42
Grade after
82
76
98
43
38
question before if
that helps answer the question above : you want to estimate the...

You want to esteem the average difference between grades on a
certain math exam before students take the associated math class
and after they take the math class. You take a random sample of 5
students and get the following results.
Grade Before
Grade After
54
82
25
76
73
98
23
43
42
38
A) Determine the population(s) and parameter(s) being
discussed.
B) Determine which tool will help us find what we need (one
sample z test, one sample...

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...

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...

A certain test preparation course is designed to improve
students' SAT Math scores. The students who took the prep course
have a mean SAT Math score of 507 while the students who did not
take the prep course have a mean SAT Math score of 501. Assume that
the population standard deviation of the SAT Math scores for
students who took the prep course is 45.7 and for students who did
not take the prep course is 32.1 The SAT...

A certain test preparation course is designed to improve
students' SAT Math scores. The students who took the prep course
have a mean SAT Math score of 507 while the students who did not
take the prep course have a mean SAT Math score of 501. Assume that
the population standard deviation of the SAT Math scores for
students who took the prep course is 45.7 and for students who did
not take the prep course is 32.1 The SAT...

Sixty students were given a history exam. Their scores are shown
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39 40 41 42 45 47 51 53 65 66 72 74 74 75 75 75 75 76 76 76 76 77
77 78 78 78 78 78 78 79 79 79 80 80 80 80 80 81 81 81 81 81 82 82
82 85 85 86 86 88 94 1) Compute the...

have a java application need to create an application which is
able to do some analysis on temperature data stored in a data file.
You will be given the “temperatures.dat” data file which contains
the data you must analyze. The analysis you’ll need to do is:
Total number of data points
Find coldest temperature
Find warmest temperature
Find average temperature
Find the frequency of each temperature
Find the most frequent temperature
Find the least frequent temperature
All classes must be...

The vice president of the student organization has asked you to
create an estimate of the proportion of students who have attained
more than 60 credit hours. You ask her what level of confidence she
wants to have in the estimate and she says that she would like to
be 90% confident in the proportion estimate. Create the confidence
interval using the sample data. Write a sentence or two to
communicate the results to her.
Student
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Refer to the Body Measurements Female Data Set and Body
Measurements Male Data Set found in StatDisk (Elementary Stats 12th
Edition, sets #1a and 1b) and use columns 5 for HDL. Use a .05
significance level to test the claim that men and women have the
same mean HDL level (High-Density Lipoprotein) female 74 56 70 40
67 96 43 80 77 41 23 76 39 52 38 37 57 81 37 50 73 61 33 41 60 62
67...

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