A local newspaper conducted a poll to gauge public opinion on a proposed city ordinance. They randomly surveyed 150 registered voters, and 72% of them expressed support for the ordinance. Based on these poll results, which conclusion is valid?
I. 72% of all registered voters in the city support the ordinance.
II. If the poll were repeated with a different random sample of 150 registered voters, exactly 72% would support the ordinance.
Neither I nor II is valid
Only I is valid
Only II is valid
Both I and II are valid
