Identify the type of sampling technique in the situations described below: 1. A quality control officer inspects every 25th item from the production line. 2. A pollster uses a computer to generate 500 random numbers, then interviews the voters corresponding to those numbers. 3. A sample consists of every 49th student from a group of 496 students. 4. The name of each contestant is written on a separate card, the cards are placed in a box, and three cards are picked from the box. 5. A market researcher selects 300 electronic engineers working in the electronics industry and 300 electronics engineers working in the communications industry. 6. A researcher interviews 21 colleagues who work in his building. 7. A random sample of boxes of manufactured items are taken and then all items in these selected boxes are inspected. 8. From a numbered list of 25 experimental subjects, 5 numbers are randomly drawn and the 5 subjects corresponding to these numbers were assigned to a particular experimental treatment. 9. An operations manager wants to improve a manufacturing process by selecting every 20th item in the manufacturing line for quality checking. 10. A private polling firm interview persons who purchase goods at a certain convenience store chain.
Identify the type of sampling technique in the situations described below:
1. A quality control officer inspects every 25th item from the production line.
2. A pollster uses a computer to generate 500 random numbers, then interviews the voters corresponding to those numbers.
3. A sample consists of every 49th student from a group of 496 students.
4. The name of each contestant is written on a separate card, the cards are placed in a box, and three cards are picked from the box.
5. A market researcher selects 300 electronic engineers working in the electronics industry and 300 electronics engineers working in the communications industry.
6. A researcher interviews 21 colleagues who work in his building.
7. A random sample of boxes of manufactured items are taken and then all items in these selected boxes are inspected.
8. From a numbered list of 25 experimental subjects, 5 numbers are randomly drawn and the 5 subjects corresponding to these numbers were assigned to a particular experimental treatment.
9. An operations manager wants to improve a manufacturing process by selecting every 20th item in the manufacturing line for quality checking.
10. A private polling firm interview persons who purchase goods at a certain convenience store chain.
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