To determine the proportion of people in your town who are s

Solution

To determine the proportion of smokers, the parks, beaches, and clubs are the suitable places.

Churches, libraries, medical clinics are not suitable as there smoking is prohibited.

Even in public places, some places they forbid smoking.

The best method to determine the smokers is from the sale of cigarettes. If person name and address are noted in the bill while selling, this will serve a good evidence for smokers list except a few persons who purchase for others like peons for office staff, etc.

Hence if we give provision for this lapse, then this bill give a clear evidence.