A researcher wants to evaluate the impact of participating in extracurricular activities (such as drama, debate, clubs

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A researcher wants to evaluate the impact of participating in extracurricular activities (such as drama, debate, clubs. sports, etc.) on a high school students self-esteem compared to not participating in such activities. The researcher gets a list of all the high schools in the state then sends a survey to all the students at 15 randomly selected high schools. The survey asks questions about the student's self-esteem and their extracurricular activities. In total, the researcher sends out 45,000 surveys and receives 30,000 completed surveys in return. Use this information for all the parts.

Part 1: Is this an example of an experiment or observational study?

 An experiment because a comparison is being made.

An experiment because subjects in the design were randomly chosen.

An observational study because the students never actually met the researcher.

An observational study because subjects determined for themselves which group (activities or no activities) they belonged to. rather than being randomly assigned to a group.

Part 2: What type of sampling method did the researcher use?

Cluster

Stratified

Systematic

Simple Random Sample (SRS)

Convenience

Part 3. What is the population for this study?

Students participating in extracurricular activities

All high school students in the state

The 45,000 young people who received a survey

The 30,000 young people who returned a completed survey