Concept explainers
To explain how the sampling method results in under-coverage that could lead to bias.
Explanation of Solution
This would lead to bad sampling method because households which do not have telephones or having telephones but number is not listed in telephone directory are not included in the sampling frame. Here under-coverage occurs because in the population, there are some groups which are left due to the choosing of random sample. Since this method of sampling does not cover entire population this leads bias.
Chapter 4 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
An Introduction to Mathematical Statistics and Its Applications (6th Edition)
Statistics: The Art and Science of Learning from Data (4th Edition)
Essentials of Statistics, Books a la Carte Edition (5th Edition)
Introductory Statistics (10th Edition)
Elementary Statistics: Picturing the World (6th Edition)
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