Question

mary explored 7 hiking trails in each county in her state. each county has an equal number of hiking trails. is this sample of the hiking trails in the state likely to be biased? yes no

Explanation:

A biased sample is one that doesn't represent the whole population fairly. Here, Mary explores 7 trails per county, and each county has an equal number of trails. This means she's sampling proportionally from each county (since each county contributes equally in terms of trail count), so the sample should represent the state's trails without bias.

Answer:

no