Question

to determine customer satisfaction with their service department, an automobile dealer randomly selects 20 hybrid-vehicle owners, 20 suv owners, and 20 sedan owners and sends them a survey. what type of sampling is used? cluster convenience simple random stratified systematic done

Explanation:

Stratified sampling divides the population into subgroups (strata) and then randomly selects samples from each stratum. Here, the population (customers) is divided into three strata: hybrid - vehicle owners, SUV owners, and sedan owners. Then 20 samples are randomly selected from each stratum.
Cluster sampling would group the population into clusters and then randomly select some clusters. Convenience sampling selects easily accessible individuals. Simple random sampling selects individuals randomly from the whole population without stratification. Systematic sampling selects individuals at regular intervals.

Answer:

stratified