SOLUTION: American airlines randomly selects 120 flights during a certain week and surveys all passengers on the flights which type of sampling is

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Question 898667: American airlines randomly selects 120 flights during a certain week and surveys all passengers on the flights which type of sampling is
Answer by ewatrrr(24785) About Me  (Show Source):
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Simple random sample
•Random sample – Here every member of the population is equally likely to be a member of the sample.
• Simple random sample – Not only is this a random sample, but every group of n is equally likely to be the sample.
•Voluntary response sample – Here subjects from the population determine whether they will be members of the sample or not.
• Convenience sample - This type of sample is characterized by the selection of easy to obtain members from the population.
• Systematic sample - A systematic sample is chosen on the basis of an ordered system.