III. Identification. Identify the type and method of sampling used in the following statements.
1. An engineer selects every 50th cell phone from the assembly line for careful testing and analysis.
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2. A reporter writes the name of each senator on a separate card, shuffles the cards and then draws five names.
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3. In conducting research for a psychology course, a student at CvSU – Tanza interviews students who are leaving the canteen.
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4. Mary is interested in political attitudes of individuals in Cavite. She uses the following procedure to obtain a sample: (a) a random sample of districts is drawn, (b) within the districts selected, municipalities/cities are randomly drawn, (c) within each municipalities/cities, barangays are randomly sampled, and (d) all residents within the barangays selected comprise the sample.
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5. You were interested in sampling students who deal drugs on campus.
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