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  • one year ago

FAN AND MEDAL The grades on the last science exam had a mean of 89%. Assume the population of grades on science exams is known to be distributed normally, with a standard deviation of 14%. Approximately what percent of students earn a score between 75% and 89%? 38.5% 15.7% 50% 34.1%

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  1. anonymous
    • one year ago
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