A local news station conducted a poll to estimate the percentage of registered voters who support a new city park initiative. A random sample of voters showed that support the initiative, with a margin of error of . Based on this information, which of the following is the most appropriate conclusion about the percentage of all registered voters who support the initiative?
The percentage of all registered voters who support the initiative is exactly .
It is plausible that the percentage of all registered voters who support the initiative is between and .
It is certain that more than of all registered voters support the initiative.
The poll results are unreliable because the sample size is too small.
