A financial management student wishes to know the expenditures of financial management students . The student plans to survey all students from 2 sets of the 6 sets of student A university is testing the effectiveness of two different medications . They have 10 volunteers . To conduct the study , researchers randomly assign number 1 to 2 each volunteer . Volunteers who are assigned number 1 get Treatment 1 and volunteers who assigned number 2 get Treatment 2- What type of research sampling techniques ( stratified, convenience, simple random, cluster or systematic?) An auditor wants to review the financial transactions of a company in order to determine whether the company is in compliance with generally accepted accounting principles . Eighty individuals who wish to lose weight are randomly divided into two groups of 40. One group is given an exercise program to follow while the other group follows a special diet . After three months , the researcher compares mean weight losses in the two groups . What type of data collection method (survey, interview, experiment, document review, or observation?)