"the human sense of smell permits us to detect separate smells."

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

Insurance premiums paid be the employer on the employees behalf are a benefit. true or false

Why is it necessary to obey social norms? write briefly.