2 years ago

30 POINTS!!!!!

Mathematics

1 answer:

Whitepunk [10]2 years ago

8 0

Answer:

A third group that does not use a cell phone before bedtime

Step-by-step explanation:

Both groups have the use of a cellphone before bedtime, and the amount used would affect their time to fall asleep, but another group is needed that doesn't use a cellphone to calculate the effect of it not being used and seeing the results.

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Answer:

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Step-by-step explanation:

so I would get rid of parentheses you do not need them

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