1.Suppose that 4000 full-time students live in one of the 10 campus dormitories of Melbourne University. Each dormitory accommodates 400 students and it is the university's policy to fully integrate students by gender and class designation in each dormitory. A researcher is conducting a survey to assess the quality of the dormitories and she received a list of students by dormitory from the registrar office. The researcher selected 3 dormitories and interviewed all students residing in these dormitories.

2.All freshmen at a university are enrolled in 1 of 30 sections of a seminar course. To select a sample of freshmen at this university, a researcher selects 4 sections of the seminar course at random from the 30 sections and all students in the 4 selected sections are included in the sample.

3.To obtain a sample of students, faculty, and staff at a university, a researcher randomly selects 50 faculty members from a list of faculty, 100 students from a list of students, and 30 staff members from a list of staff.

4.To obtain a sample of the seniors at a particular high school, a researcher writes the name of each senior on a slip of paper, places the slips in a box and mixes them, and then selects 10 slips. The students whose names are on the selected slips of paper are included in the sample.

5.Veg World restaurant is very keen about customer satisfaction. The restaurant often requests customers to complete a short survey after they get served in the restaurant.

6.Suppose that an auditor is auditing the financial transactions of ABC Company. There are 4000 sales invoices that require auditing. The auditor grouped the invoices into three groups as small transactions (group 1), medium transactions (group 2) and large transactions (group 3). Group 1 contains 1000 invoices, group 2 contains 1500 invoices and group 3 contains 1,500 invoices. The researcher wants to select 20% of invoices from each group.

Require:

Identify the appropriate sampling method for each case (Simple random sampling, Systematic random sampling, Stratified random sampling, Cluster sampling or Convenience sampling)

Provide adequate discussion on why the chosen sampling method is applicable.