alleryStart learning →Strata hold 2,000, 3,000 and 5,000 units. A proportional sample of 200 takes how many from the 3,000 stratum?
A60
B40
C100
D30
Answer & Solution
Correct answer: A. 60
The stratum is 30 percent of 10,000 units, so it gets 30 percent of 200, which is 60.
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