Researchers wanted to know about the alcohol drinking habits of high school students in the United States that vape. In order to do so, they randomly selected 10 high schools in the United States and then sampled all of the students from the school by asking them if they had ever vaped. Of the students that were surveyed, 67% said that they frequently vaped.
a.)Does the 67% represent a statistic or a parameter? Explain your reasoning.
b.) What type of sample was obtained? (Random, systematic, convenience, stratified, or cluster). Explain your reasoning