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The librarian interviewed the $247$ patrons who spent the most time at the library last year. $\newline$ Is this a random sample of the library patrons? $\newline$ Choices: $\newline$ (A)yes $\newline$ (B)no

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Identify representative, random, and biased samples

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Q. The librarian interviewed the

247

patrons who spent the most time at the library last year.

\newline

Is this a random sample of the library patrons?

\newline

Choices:

\newline

(A)yes

\newline

(B)no

Define random sample: Understand the definition of a random sample. A random sample means every member of the population has an equal chance of being selected.
Analyze selection method: Analyze the selection method used by the librarian. $\newline$ The librarian selected the patrons based on the amount of time they spent at the library, which means the selection was not random but based on a specific criterion.

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