Statistics for Management and Economics (Book Only)
11th Edition
ISBN: 9781337296946
Author: Gerald Keller
Publisher: Cengage Learning
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Question
Chapter 5.2, Problem 6E
To determine
Reasons for the difference in size between a sample and population.
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Students have asked these similar questions
A quality engineer in charge of a coffee filter pack production line was concerned about
the weight (in grams) of the filter packs being produced. The quality team sampled three
packs every hour, throughout the production day. The table below shows the results:
Sample
number
1
2
3
4
5
6
7
20.6
20.1
20.6
21.5
21.4
21.1
21.4
Weight (g)
21.1
20.0
21.2
22.2
21.1
22.3
20.9
20.7
20.3
21.3
21.4
19.9
19.9
21.1
b) A small-town mechanic says that 8% his customers come in for an oil change. When
1000 samples were drawn from his records, it was found that 6.5% of these came in for
an oil change.
What is the target population?
Does the value 8% refer to the parameter or to the statistic?
Is the value 6.5% a parameter or a statistic?
i.
ii.
iii.
7. A television station wishes to study the relationship between viewership of its 11 p.m. news program and viewer age (18 years or less, 19 to 35, 36 to 54, 55 or older). A sample of 250 television viewers in each age group is randomly selected, and the number who watch the station’s 11 p.m. news is found for each sample. The results are given in the table below.
Chapter 5 Solutions
Statistics for Management and Economics (Book Only)
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