A polling organization conducts a survey to estimate the proportion of voters in a district who support a particular candidate. A random sample of voters is surveyed, and the proportion in the sample who support the candidate is , with a margin of error of . Which of the following is the most appropriate conclusion about the proportion of all voters in the district who support the candidate?
It is plausible that the proportion is between and .
The proportion is exactly .
It is plausible that the proportion is less than .
It is plausible that the proportion is greater than .
