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A teacher wants to test the effectiveness of two
different math textbooks. She divides her class
into two groups. One group studies out of
textbook A and the other out of textbook B. At
the end of the year she tests both groups to
see which one scores higher. This is an
example of

Sagot :

Answer: an experiment

Rahaanfaisalidn

Answer:

The answer is B

Acellus Sux

Step-by-step explanation:

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