Identify which type of sampling is used: random, systematic, convenience, stratified, or cluster. to determine customer opinion of their check dash in service, american airlines randomly selects 110 flights during a certain week and surveys all passengers on the flights.

This is cluster sampling.

Step-by-step explanation:

American Airlines randomly selects 110 flights during a certain week and surveys all passengers on the flights.

This is a type of cluster sampling.

This type of sampling is done by dividing the population into different groups and a simple random sample of clusters is selected from the population.

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step-by-step explanation:

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