1. A manager at a Doughnut shop wants to start visually checking finished Doughnuts, but she doesn't have time to check every doughnut. She decides to check a random doughnut in the first 20 made each day, and then check every 20th, doughnut thereafter. Identify the sampling method used and justify your answer. 2. In a large company the top level manager choose 100 employees by taking random samples after grouping the employees as 10 managers and 90 non-managerial employees. Identify the sampling method used and justify your answer. 3. A teacher asks the first 5 students who arrive to class to participate in a research study about learning habits of students at home. Identify the Sampling method used and justify your answer. 4. A manager associated each employee's name with a number on one ball in a container, then drew balls without looking to select a sample of 5 employees. Identify the Sampling method used and justify your answer. 5. Explain Nominal and Ordinal Scales of Measurement