A randomly selected sample of 1,000 college students was asked whether they had ever used the drug, Ecstasy. Sixteen percent (16% or 0.16) of the 1,000 students surveyed said they had. Which one of the following statements about the number 0.16 is correct? a. It is a sample proportion b. It is a population proportion c. It is a margin of error d. It is a randomly chosen number​