Education researchers are interested in the workload expectations of freshmen at a local university. Which of the following techniques would give a stratified random sample?

A stratified random sample divides the population into relevant groups, or strata, and randomly samples from each group. Choice A treats each major as a stratum and randomly selects 10 freshmen from every major. The cafeteria and seminar approaches sample by location or class, while surveying one professor’s students is a cluster-style approach rather than sampling from every stratum.

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