(Answered) A psychologist wants to know if children become more or

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A psychologist wants to know if children become more or less empathic over time. She recruits 50 third graders and analyzes their level of empathy using the Basic Empathy Scale (BES), which provides scores ranging from 20 (least empathy) to 100 (most empathy). Three years later, when these same children are in seventh grade, she has them complete the BES again.

What type of test is needed to analyze the data?
What is the hypotheses (including the symbols used to state the hypothesis)

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