Question
The following is a sample of sanitation scores for 20 cruise ships. 97, 88, 81, 87,...
The following is a sample of sanitation scores for 20 cruise ships.
97, 88, 81, 87, 90, 89, 82, 88, 92, 92, 86, 82, 99, 86, 93, 82, 94, 90, 89, 92
A) Find the mean and standard deviation of the sanitation scores.
x = _____
S = _____
B) Calculate the intervals x̅ ± s , x̅ ± 2s, x̅ ± 3s :
x̅ ± s = ( ___ , ___ )
x̅ ± 2s = ( ___ , ___ )
x̅ ± 3s = ( ___ , ___ )
C) Find the percentage of measurements in the data set that fall within each of the intervals in part "B"
The percentage of the measurements that fall within the interval x̅ ± s is ___ %
The percentage of the measurements that fall within the interval x̅ ± 2s is ___ %
The percentage of the measurements that fall within the interval x̅ ± 3s is ___ %
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
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...
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...
DHL recently selected a random sample of packages and weigh them. The weights for the samples...
DHL recently selected a random sample of packages and weigh
them. The weights for the samples are given below.
Use Excel to develop a frequency distribution using classes
having equal widths.
Use Excel to develop a relative frequency and a cumulative
relative frequency distribution for the weights using the same
classes created in part b.
What percent of the sampled crates have weights greater than 96
pounds?
DHL
89
91
86
93
94
91
95
83
84
92
80
88...
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...
please answer ALL the question 1--The diastolic blood pressure (in mm Hg) of 84 patients with...
please answer ALL the question
1--The diastolic blood pressure (in mm Hg) of 84 patients with
hypertension was:
88 98 78 84 77 81 90 82 75 72 92 85 92 77 84 77 82 100
92 88 74 80 95 90 87 80 83 77 86 80 88 90 79 82 93 100
80 85 96 85 90 84 82 95 88 97 80 88 94 92 88 96 90 103
88 86 84 90 98 88 86 95...
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...
*More than 2 dependent samples* Andrzejewski, Spencer, Kelley, and Berridge trained 8 rats in a signal...
*More than 2 dependent samples*
Andrzejewski, Spencer, Kelley, and
Berridge trained 8 rats in a signal detection procedure. That is,
the rats had to respond on two levers (left or right) signifying
whether they had just seen a tiny green light or not. Prior to test
sessions, each of the rats was given a drug injection. The
dependent variable was the percentage of trials in which they
responded correctly.
Drug
Rat
Saline
mg/kg
Amphetamine
0.25 mg/kg
Amphetamine
0.5 mg/kg
Ritalin...
2. Last year the average grade on the inference test was 82. A random sample of...
2. Last year the average grade on the inference test was 82. A
random sample of this year’s student scores on the same test
produced the results below. Test at the .02 significance level to
see whether the scores have increased significantly from last
year?
83 87 98 92 91 100 88 89 93 81 94 96
Using the accompanying Student Grades data, construct a scatter chart for midterm versus final exam grades...
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...
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
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 9 minutes ago
asked 9 minutes ago
asked 16 minutes 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
asked 2 hours ago
asked 2 hours ago
asked 2 hours ago