Question

Determine whether each sample may be biased. Explain.

Answer 1

It depends. Do you mean biased as in a quick inference? Because if so then it could be biased because hes probably just checking out the people around the 'family'. Some families look different even when related, and sometimes you cant tell if they really are. So most of the survey would be biased if he doesnt directly ask them.

Answer 2

Depends, just off of reading that id say non biased but could be biased worded like that.