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Rosemary thinks it would be better to take a random sample.
She is going to use a database of all of the students at the school to select her random
sample.
(b) Explain how Rosemary can use the school database to select a random sample of 20
students.

Rosemary thinks it would be better to take a random sample She is going to use a database of all of the students at the school to select her random sample b Exp class=


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