Questions:

What type of sampling technique is used in each example? Convenient sampling Stratified random sampling Cluster random sampling Systematic random sampling 1_ A student council surveys 60 students by taking random samples of 15 freshmen, 15 sophomores, 15 juniors, and 15 seniors. A quality control worker at a factory selects the first 5 items she sees as her sample for the day. A fitness club manager ordered t- shirts and now wants to check some of them to make sure they were printed properly. He randomly selects 3 out of 15 boxes of t-shirts and checks every t-shirt in those 3 boxes. Security workers at an airport randomly choose one of the first 50 people to pass through a checkpoint for extra security screening. After that person, they