Mathematics, 10.10.2019 11:30 fatherbamboo

Bernice wants to know which ice cream parlor is the most popular among students at her school. which samples are random for this population and which are not?

four people from each of bernice's classes
every sixth person at bernice's favorite ice cream parlor
every third girl that walks by the school cafeteria
two people from every class during fourth period at bernice's school
every fifth person that walks by the school library

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Bernice wants to know which ice cream parlor is the most popular among students at her school. which...