.04*7115.68=284.6272
$284.62 or $284.63 (depending on how lenient your teacher is with rounding)
The statements that are true about this study are:
- This study uses random sampling.
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This study uses a control group.
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This study uses a repeated measures design.
Random sampling occurs when each sample has an equal probability of being chosen in a study.
This is seen in the random selection of 100 children. The Control group was used with the first group that had no screen time.
The repeated measures design was also used when multiple measurements were taken during different weeks.
Learn more about experiments here:
brainly.com/question/17216882
Answer:
at + vi = vf
Step-by-step explanation:
In order to solve for vf, we need to isolate said variable.
a = vf - vi/t (Given)
at = vf - vi (Multiply t on both sides)
at + vi = vf (Add vi on both sides)
