Question
In: Statistics and Probability
Calculate the sample mean and sample variance for the following frequency distribution of hourly wages for...
Calculate the sample mean and sample variance for the following frequency distribution of hourly wages for a sample of pharmacy assistants. If necessary, round to one more decimal place than the largest number of decimal places given in the data.
| Class | Frequency |
|---|---|
| 6.51 - 8.506.51 - 8.50 | 5050 |
| 8.51 - 10.508.51 - 10.50 | 1818 |
| 10.51 - 12.5010.51 - 12.50 | 4242 |
| 12.51 - 14.5012.51 - 14.50 | 2020 |
| 14.51 - 16.5014.51 - 16.50 | 4646 |
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Sample Mean:
Sample Variance:
Solutions
orchestra answered 1 year agoRelated Solutions
Calculate the sample variance and sample standard deviation for the following frequency distribution of heights in...
Calculate the sample variance and sample standard deviation for
the following frequency distribution of heights in centimeters for
a sample of 8-year-old boys. If necessary, round to one more
decimal place than the largest number of decimal places given in
the data.
Heights in Centimeters
Class Frequency
120.6 - 123.6 26
123.7 - 126.7 22
126.8--129.8 34
129.9-132.9 26
133-136 44
Calculate the sample variance and sample standard deviation for the following frequency distribution of heart rates...
Calculate the sample variance and sample standard deviation for
the following frequency distribution of heart rates for a sample of
American adults. If necessary, round to one more decimal place than
the largest number of decimal places given in the data.
Heart Rates in Beats per Minute
Class
Frequency
61 - 66
4
67 - 72
8
73 - 78
5
79 - 84
7
85 - 90
13
Calculate the sample variance and sample standard deviation for the following frequency distribution of heart rates...
Calculate the sample variance and sample standard deviation for
the following frequency distribution of heart rates for a sample of
American adults. If necessary, round to one more decimal place than
the largest number of decimal places given in the data.
Heart Rates in Beats per Minute
Class
Frequency
61 - 66
10
67 - 72
6
73 - 78
14
79 - 84
5
85 - 90
14
Calculate the sample standard deviation and sample variance for the following frequency distribution of final exam...
Calculate the sample standard deviation and sample variance for
the following frequency distribution of final exam scores in a
statistics class. If necessary, round to one more decimal place
than the largest number of decimal places given in the data.
Lower Bound Upper Bound Frequency
56 _____________64 _________13
65 _____________73 _________9
74 _____________82 _________4
83 _____________91 _________10
92 _____________100 _________6
Calculate the sample standard deviation and sample variance for the following frequency distribution of heart rates...
Calculate the sample standard deviation and sample variance for
the following frequency distribution of heart rates for a sample of
American adults. If necessary, round to one more decimal place than
the largest number of decimal places given in the data. Heart Rates
in Beats per MinuteClass Frequency 61 - 66 12 67 - 72 3 73 - 78 9
79 - 84 11 85 - 90 13
The following frequency distribution reports the hourly rate for a sample of 70 workers. The population...
The following frequency distribution reports the hourly rate for
a sample of 70 workers. The population follows the normal
distribution.
Hourly rate ($) Frequency 0 but less than or equal to 5 4 5 but
less than or equal to 10 15 10 but less than or equal to 15 27 15
but less than or equal to 20 18 20 but less than or equal to 25 6
a) Calculate the sample mean and sample standard deviation for the...
Given the following frequency distribution, calculate the mean by direct method?
Given the following frequency distribution, calculate the mean by direct method?
Find the mean and the Variance of the following sample data: x Frequency (f) 1...
Find the mean and the Variance of the following sample
data:
x
Frequency (f)
1
5
2
6
4
9
8
6
12
4
Calculate the mean, the variance, and the standard deviation of the following discrete probability distribution. (Negative...
Calculate the mean, the variance, and the standard deviation of
the following discrete probability distribution. (Negative
values should be indicated by a minus sign. Round intermediate
calculations to at least 4 decimal places. Round your final answers
to 2 decimal places.)
x
−32
−20
−10
−5
P(X = x)
0.46
0.24
0.18
0.12
1. Calculate the mean, the variance, and the standard deviation of the following discrete probability distribution....
1. Calculate the mean, the variance, and the standard deviation
of the following discrete probability distribution.
X
-23
17
-9
-3
P(X=x)
0.5
0.25
0.15
0.19
2. A marketing firm is considering making up to three new hires.
Given its specific needs, the form feels that there is a 60% chance
of hiring at least two candidates. There is only a 5% chance that
it will not make any hires and a 10% chance that it will make all
three...
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