73. Name the sampling method used in each of the following situations: a. A woma

Question

73. Name the sampling method used in each of the following situations:

a. A woman in the airport is handing out questionnaires to travelers asking them to evaluate the airport’s service. She does not ask travelers who are hurrying through the airport with their hands full of luggage, but instead asks all travelers who are sitting near gates and not taking naps while they wait.

b. A teacher wants to know if her students are doing homework, so she randomly selects rows two and five and then calls on all students in row two and all students in row five to present the solutions to homework problems to the class.

c. The marketing manager for an electronics chain store wants information about the ages of its customers. Over the next two weeks, at each store location, 100 randomly selected customers are given questionnaires to fill out asking for information about age, as well as about other variables of interest.

d. The librarian at a public library wants to determine what proportion of the library users are children. The librarian has a tally sheet on which she marks whether books are checked out by an adult or a child. She records this data for every fourth patron who checks out books.

Name the sampling method by selecting the appropriate number:

1. Systematic, 2. Stratified, 3. Stratified Proportional, 4. Cluster, 5. Convenient, 6. Quota, 7. Simple Random)

a._Provide supporting comments for your answers

b. _ Provide supporting comments for your answers

c._ Provide supporting comments for your answers

d.Provide supporting comments for your answers

e.Provide supporting comments for your answers

Explanation / Answer

a) convenient sampling method as she asks all travelers who are sitting near gates not any randomly selected traveller in the airport.

b)  Cluster sampling as the teacher randomly select a row and then called all students of the selected rows.

c) Simple Random sampling as  100 randomly selected customers are given questionnaires.

d) Systematic sampling as she records this data for every fourth patron who checks out books.

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