In a study to estimate the proportion of defective items produced by a machine, a random sample was inspected. The estimated proportion of defective items is , with a margin of error of . Based on this estimate and margin of error, which of the following is the most appropriate conclusion about the proportion of all items produced by the machine that are defective?
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 .
