Ms. Crabtree is conducting a study that examines time in rank for university professors of Higher Education at teaching colleges. She collects institutional data from a sample of teaching colleges in the Mid-Western United States. She follows that up with interviews of representative Deans, department heads, and program directors. Her sampling for the interviews should involve
◦ all participants from the quantitative phase.
◦ random sampling of participants from the quantitative phase.
◦ purposive sampling from a new set of participants.
◦ purposive sampling of participants from the quantitative phase.