Question

to find how high school students feel about hot lunches, adam walks to the nearest high school and gives a survey postcard to every twentieth student that enters the building. he asks the students to mail the postcard in if they choose to participate in the study. select all sampling methods used. ☐ cluster ☐ convenience ☐ simple random ☐ stratified ☐ systematic ☐ voluntary done

Explanation:

• Systematic sampling: Adam selects every twentieth student. This is a form of systematic sampling where elements are selected at regular intervals from an ordered population.
• Voluntary sampling: Students choose to mail the postcard in. In voluntary sampling, individuals decide on their own to participate in the study.

Answer:

systematic, voluntary