Bàn bàn luận về tầm quan trong của tự giác trong mỗi cá nhân trước cộng đồng

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

Why is corruption not effectively reduced in nepal

What were the death camps? who was sent there?