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11. Among those who score 3 or lower on Prtest5, what percentage got a low FinalGrade? Compare this to those who score 4 or higher.

11. Among those who score 3 or lower on Prtest5, what percentage got a "low" FinalGrade? Compare this to those who score 4 or higher.

12. Is the above observed difference statistically significant? Explain your answer in plain English, and state your conclusion in the context of the problem. Note StatGraphics report the Chi-square statistic under Test of Independence.

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