Concept explainers
To select the best option from the multiple choice question according to the given question.

Answer to Problem T4.7SPT
Option (a) is correct.
Explanation of Solution
The sampling design which would yield the type of information the station requires is the stratified sample from the cities and towns in the market area because if we want to take into account the different cities and the different towns (which are expected to have different viewing habits), it is best to use a stratified random sample with each city/town as a subgroup. And a stratified random sampling draws simple random samples from independent subgroups. Thus, option (a) is the correct option.
Chapter 4 Solutions
PRACTICE OF STATISTICS F/AP EXAM
Additional Math Textbook Solutions
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