A survey was mailed to a total of 400 students; 100 were - 11980

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mareya

mareya

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Request Description

A survey was mailed to a total of 400 students; 100 were randomly selected from each of the freshman, sophomore, junior and senior classes last semester. What sampling method was used?

A.    Systematic sample

B.    Cluster sample

C.    Simple random sample

D.    Stratified sample

 

Solution Description

A survey was mailed to a total of 400 students; 100 were randomly selected from each of the freshman, sopho