Question
In: Statistics and Probability
A group of 20 prisoners in a particular cellblock were tested on their knowledge of the...
A group of 20 prisoners in a particular cellblock were tested on their knowledge of the
rules of the institution. The marks (out of a possible score of 70) were as follows:
31, 28, 27, 19, 18, 18, 41, 0, 30, 27, 27, 36, 41, 64, 27, 39, 20, 28, 35, 30.
a) Calculate the range, variance and standard deviation for these data.
b) Remove the largest and smallest scores. Re-calculate the range, variance and
standard deviation.
c) Compare the measures of dispersion for the two distributions. Are there any
differences? If so, how would you account for them?
Solutions
orchestra answered 2 years agoRelated Solutions
A group of students with no knowledge of the endocrine system were given a test on...
A group of students with no knowledge of the endocrine
system were given a test on insulin function before (pre-test) and
after (post-test) an explanation; the data is presented in Table
D.
Table D. The effect of an explanation of the endocrine
system on pre- and post-test scores (%).
Student
Pre-test
Post-test
1
25
59
2
33
45
3
37
44
4
39
51
5
31
41
6
31
42
7
27
58
a. Do you use a paired or...
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In a survey of a group of men, the heights in the 20-29 age
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(a) Find the probability that a study participant has a height
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In a survey of a group of men, the heights in the 20-29 age group were...
In a survey of a group of men, the heights in the 20-29 age
group were normally distributed, with a mean of 67,4 inches and a
standard deviation of 2.0 inches. A study participant is randomly
selected. Complete parts (a) through (d) below.
(a) Find the probability that a study participant has a height
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The probability that the study participant selected at random is
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In a survey of a group of men, the heights in the 20-29 age group were...
In a survey of a group of men, the heights in the 20-29 age
group were normally distributed, with a mean of 67.9 inches and a
standard deviation of 4.0 inches. A study participant is randomly
selected. a)Find the probability that a study participant has a
height that is less than 67 inches. b) Find the probability that a
study participant has a height that is between 67 and 72 inches.
c)Find the probability that a study participant has a...
In a survey of a group of men, the heights in the 20-29 age group were...
In a survey of a group of men, the heights in the 20-29 age
group were normally distributed, with a mean of 67.1 inches and a
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(round to 4...
In a survey of a group of men, the heights in the 20-29 age group were...
In a survey of a group of men, the heights in the 20-29 age
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In a survey of a group of men, the heights in the 20-29 age group were...
In a survey of a group of men, the heights in the 20-29 age
group were normally distributed, with a mean of
69.3 inches and a standard deviation of 2.0 inches. A study
participant is randomly selected. Complete parts (a) through (d)
below.
(a) Find the probability that a study participant has a height
that is less than
65 inches.
)(b) Find the probability that a study participant has a
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)(c) Find...
n a survey of a group of men, the heights in the 20-29 age group were...
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