Respuesta :
Stratified sampling is used.
Given that,
- An automobile dealer randomly selects 20 hybrid-vehicle owners, 20 SUV owners, and 20 sedan owners.
Based on the above information, the following things should be considered:
- Stratified sampling is the sampling method arise from the population that could be divided into subpopulation.
- Like in the given situation, the vehicles are divided into 3 types.
Therefore we can conclude that stratified sampling is used.
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