To determine customer opinion of their check dash in servicecheck-in service , American Airlines randomly selects 130 flights during a certain week and surveys all passengers on the flights passengers on the flights. What type of sampling is used?

The correct answer to the question: What type of sampling is used? In regards to a research study in which American Airlines wishes to know the opinion of its customers related to their two new services, would be: cluster sampling.

Explanation:

In research there are many options to choose from for a researcher to carry out his study and achieve his goals. Among the options is how he/she will select the sample, meaning the group, or groups, that will be used for the study. This selection, of course, will depend on the type of study, and the purpose that is sought. In this case, we have an airline, American Airlines, who wishes to know how its customers are responding to their two new services. Since they cannot ask every single customer they have, or have had, who has used either, or both, of the services, then what they do is select a sample of 130 flights to choose the customers who will respond to their survey. These customers are a small group that represents the larger population of American Airline flyers, and they are selected from the 130 flights, which ensures that they at least have heard of the new services. This is what is called cluster sampling.