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irina [24]
1 year ago
9

To collect data about the amont of time spent​

Mathematics
2 answers:
Sloan [31]1 year ago
8 0
A or survey 20 randomly selected students from each grade.
solniwko [45]1 year ago
5 0

Answer:

Probably the first one because the other two questions would be un-reliable

Step-by-step explanation:

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