7. Identify the type of sampling that is used in the following statements (Random, Systematic, Stratified, Cluster, Convenience). a. The name of each contestant is written on a separate card, the cards are placed in a bag, and three names are picked from the bag. b. To avoid working late, a quality control analyst simply inspects the first 100 items produced in a day. c. A tax auditor selects every 1000th income tax return that is received. d. A research team wants to study the demographics of college students in the United States using proportionate samples of students in majors reflecting actual U.S. percentages. e. To determine customer opinion of their check-in service, American Airlines randomly selects 90 flights during a certain week and surveys all passengers on the flights.
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Random sampling - because the names are picked randomly from the bag. b. Convenience sampling - because the analyst simply inspects the first 100 items produced in a day, which is convenient for them. Show more…
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