What are the answers to these?

An education expert is researching teaching methods and wishes to interview teachers from a particular school district. she randomly selects ten schools from the district and interviews all of the teachers at the selected schools. which type of sample did she use in this study? a)systematic sample b)probability sample c)stratified sample d)cluster sample

Identify and describe the purposes of taxation.

What specific words do you hear in dr. king’s speech that are powerful