B. Identify which sampling method is applied in the following situations.

1. The teacher randomly selects 20 boys and 15 girls from a batch of learners to be members of a group that

will go on a field trip.

2. A sample of 10 mice is selected at random from a set of 40 mice to test the effect of a certain medicine.

3. The people in a certain seminar are all members of two of five groups are asked what they think about the

President.

4. A brand manager of toothpaste asks ten dentists that have clinics closest to his office whether they use a

particular brand of toothpaste.

5. A barangay health worker asks every four houses in the village for the ages of the children living in those households.