Identify the type of sampling used in the following statements. Write the letter of your choice only in a separate paper.

A - Simple random sampling E - Systematic random sampling, B - Stratified random sampling F - Cluster random sampling C - Convenience sampling G - Quota sampling D - Purposive sampling

1. A biologist selects every 5th sample from the assembly line for careful testing and analysis.

2. A teacher writes the name of each student on a separate card, shuffles the cards, and then draws five names.

3. A dean of a college surveys all the students from each of 12 randomly selected classes.

4. A medical student interviews all the diabetic patients admitted at a particular hospital in a given month.

5. To find out how diners feel about the food service of a restaurant, the manager stands outside the main door and interviews the first 50 diners who walk out of the restaurant.

6. A reporter obtains numbered listing of the 10 hospitals, uses a computer to generate 5 random numbers between 1 and 10, and then interviews the nurses of the hospitals corresponding to these numbers.

7. An instructor randomly selects 10% of the men and women from each of four classes.

8. In conducting research for a nursing course, a student interviews students who are staying at the BC canteen.

9. A certain subdivision has been found having a total population consisting of the following religious affiliations: Catholic - 50%, Protestant - 25%, Iglesia ni Cristo - 15%, Mormons - 5%, and nonaffiliated - 5%. Random samples of 100 individuals were selected composed of 50 Catholics, 25 Protestants, 15 Iglesia ni Cristo, 5 Mormons and 5 unaffiliated.

10.A reporter obtains sample data from readers who decide to mail in a questionnaire printed in the latest issue.