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A committee wants to perform a survey in a university where 25 mathematical and statistical courses are offered. The committee selects 3 students from each

A committee wants to perform a survey in a university where 25 mathematical and statistical courses are offered. The committee selects 3 students from each class and survey all of them. What type of sampling we use?

Question options:

Cluster

Convenient

Systematic

Random

Stratified

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