Question
Consider the following population of 6 numbers. A B C D E F 75 77 78...
Consider the following population of 6 numbers.
| A | B | C | D | E | F |
| 75 | 77 | 78 | 80 | 84 | 88 |
a. The population mean is .
b. Bob selected one sample of four numbers from this population. The sample included the numbers 80, 84, 88, 77. Calculate the following for this sample:
The sample mean is .
The sampling error is .
c. When Bob calculated the sample mean, he mistakenly used the numbers 80, 87, 88, 77. Calculate the following for this (incorrect) sample:
The (incorrect) sample mean is
The sampling error is
The nonsampling error is
Note: Keep 2 decimal places in your answers.
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
TestScores 53 53 56 56 56 58 58 58 59 59 59 60 60 62 63...
TestScores
53
53
56
56
56
58
58
58
59
59
59
60
60
62
63
63
63
64
65
65
66
67
67
67
67
68
69
69
69
69
71
71
72
72
72
72
73
73
73
73
73
74
75
75
75
76
76
76
76
77
77
77
77
77
78
78
78
79
79
79
79
80
80
80
80
80
80
81
81
81
82
82
83
83
83
83
84
84
84...
The following weights in kilograms were recorded for a hockey team: 73 75 76 77 78...
The following weights in kilograms were recorded for a hockey
team: 73 75 76 77 78 86 81 75 100 92 82 73 85 79 84 92 80 78 77 81
83 74 80 69 92 79 72 76 a) Find the mean, mode, and median weights.
b) Which of these three measures of central tendency is
the least representative of the set of weights? Why?
The following scores represent a sample of final examination grades for a statistics course 23 60...
The following scores represent a sample of final examination
grades for a statistics course
23 60 98 32 57 74 52 70 82 69 74 63 80 62 80 77 81 95 41 65 92
85 85 61 36 79 55 76 52 10 64 75 78 25 80 48 83 64 88 82 81 67 41
71 67 54 34 72 74 43 60 78 84 89 76 84 17 90 15 79
a) Compute the 20th percentile of...
Consider the following sample data Sample A: 7,14,21 Sample B: 77, 84, 91 Sample C: 1,080;...
Consider the following sample data Sample A: 7,14,21 Sample B:
77, 84, 91 Sample C: 1,080; 1,087; 1,094 (a) Find the mean and
standard deviation for each sample (b) What does this exercise show
about the standard deviation? A: The idea is to illustrate that the
standard deviation is not a function of the value of the mean or B:
The idea is to illustrate that the standard deviation is a function
of the value of the mean
A 6th grade teacher was interested in comparing two ways of teaching math to her students....
A 6th grade teacher was interested in comparing two ways of
teaching math to her students. She used method A with one of her
existing classes and method B with another one. She flipped a coin
to decide which class would receive method A. At the end of the
year her students obtained the following scores (percent correct)
on a comprehensive math exam. Method A: 75, 82, 88, 93, 69, 72, 78,
81, 84, 96 Method B: 66, 84, 72,...
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...
C) Calculate the mean, mode, median, P65 for the following data: 75, 89, 89, 89, 56,...
C) Calculate the mean, mode, median, P65 for the following data:
75, 89, 89, 89, 56, 77, 99, 91, 80, 76, 84, 83, 101, 111, 94. (Show
all process to reach the final result).
D) Find the mean for the following frequency distribution: (Show
all the
process to
reach the final result).
Limits
Frequency
30-39
15
40-49
6
50-59
12
60-69
7
70-79
10
80-89
13
90-99
8
Question 9-15 are based on the random sample below which is obtained to test the following...
Question 9-15 are based on the random
sample below which is obtained to test the following hypothesis
about the population mean. Test the hypothesis that the mean is
less than 80.
80
100
81
93
80
57
98
90
71
56
58
78
59
55
55
77
72
78
56
94
98
59
93
86
89
62
60
66
59
71
96
97
94
69
64
77
87
77
64
90
90
95
98
99
56
69
72
81
95...
The following scores represent a sample of final examination grades for a statistics course 23 60...
The following scores represent a sample of final examination
grades for a statistics course
23 60 98 32 57 74 52 70 82 69 74 63 80 62 80 77 81 95 41 65 92
85 85 61 36 79 55 76 52 10 64 75 78 25 80 48 83 64 88 82 81 67 41
71 67 54 34 72 74 43 60 78 84 89 76 84 17 90 15 79
a) Provide a frequency polygon with...
6. Use the pulse rates in beats per minute (bpm) of a random sample of adult...
6.
Use the pulse rates in beats per minute (bpm) of a random
sample of adult females listed in the data set available below to
test the claim that the mean is less than 78 bpm. Use a 0.10
significance level.
Pulse Rate (bpm)
102
102
36
100
72
52
46
71
83
87
50
58
36
46
52
94
39
65
40
101
76
65
89
67
99
51
70
44
76
77
57
102
87
79
41
95...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 2 minutes ago
asked 26 minutes ago
asked 45 minutes ago
asked 55 minutes ago
asked 56 minutes ago
asked 56 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 2 hours ago