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Selena Gomez discovered that last year, 18 MSA students took a final exam with a passing score of 80. The average score for those who

Selena Gomez discovered that last year, 18 MSA students took a final exam with a passing score of 80. The average score for those who passed was 88, the average score for those who failed was 64, and the overall mean score for all students was 84

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