Question: Stratified Sampling: Suppose that the student population below is devided into four strata (base on some criterion). The table lists the students' names and the

Stratified Sampling: Suppose that the student population below is devided into four strata (base on some criterion). The table lists the students' names and the strata to which they are assigned. A sample of 70 students is needed. a) How many students are in each stratum? b) How many students from each stratum should be selected for a sample? c) Using stratified sampling method, select an actual sample of 70 students.

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