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Textbook Expert
Textbook ExpertVerified Tutor
26 Oct 2021

Given information

Given - 

Population described is library users. 

Sample is recorded by the librarian by checking the fourth user who checks out books.

Step-by-step explanation

Step 1.

Since the librarian is checking every fourth user i.e. after a given interval. This type of probability sampling method where the researcher chooses sampling units from the population at a regular interval is known as systematic sampling.

 

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