Final answer:
A norm is an expectation of behavior within a society, and 'Cheating on an exam is unethical and should warrant academic punishment' is an example that fits this definition because it reflects societal views on education and academic honesty.
Step-by-step explanation:
Norms are the expectations of how individuals are supposed to behave in a society, reflecting what is considered good, right, and important within a cultural context. Real-life examples include giving others personal space and following laws against crimes like bank robbery. Some norms, known as mores, are considered so vital to a society's moral fabric that violating them results in serious consequences and, often, legal action. These are distinguished from folkways, which are the less strict social norms. Normative ethics addresses these moral behaviors, establishing criteria to guide what is considered correct behavior.
Given the social context and the moral implications, the statement that 'Cheating on an exam is unethical and should warrant academic punishment' best exemplifies a norm because it directly addresses the moral views or principles of a group, namely an educational institution. It implies a formal norm upheld by the academic community, with set consequences for its violation — reinforcing the fact that plagiarism or dishonesty is not only immoral but also punishable within this structured societal framework.