Problem

\(\text{Sixty}\) sampled students are randomly assigned to \(\text{two}\) apps, and score gain is measured. Identify the supported population, sample, experimental unit, treatment, response, and study design.

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Population: all students everywhere; sample: 60 students; unit: one student; treatment: assigned app; response: score gain; design: observational survey.

Population: students supported by the sampling frame; sample: 60 students; unit: one student; treatment: assigned app; response: score gain; design: randomized experiment.

Population: students supported by the sampling frame; sample: the two apps; unit: all students together; treatment: assigned app; response: score gain; design: randomized experiment.

Population: students supported by the sampling frame; sample: 60 students; unit: one student; treatment: score gain; response: assigned app; design: randomized experiment.

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\(\text{Sixty}\) sampled students are randomly assigned to \(\text{two}\) apps, and score gain is measured. Identify the supported population, sample, experimental unit, treatment, response, and study design.

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