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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

Which event in the history of the americans with disabilities act is an example of a conflict between different levels and branches of government?

Artist xenobia bailey said that art serves her personal growth in several ways. which is not one of those ways?