Concept explainers
To select the best option from the multiple choice question according to the given question.
Answer to Problem AP1.10CPT
Option (d) is correct.
Explanation of Solution
The counties are separated into urban, rural and suburban while random samples are selected from each group.
Thus we then note that urban, rural and suburban are non-overlapping/independent subgroups while simple random samples are selected from each subgroup and thus the described sample is a stratified random sample. Thus, option (d) is the correct option.
Chapter 4 Solutions
PRACTICE OF STATISTICS F/AP EXAM
Additional Math Textbook Solutions
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