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Mathematics, 30.03.2020 21:59 vanessajimenez361
Your stats instructor graded your exams (0 to 100) and provided the exam summary statistics before returning the exam papers. Exams scores were normally distributed with a mean of 70.5 and a standard deviation of 12.5. He assigns letter grades based on 100 points: 90 or higher is A; 80 < 90 is B; 70 < 80 is C; 60 < 70 is D; a
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