Two Thousand Students Took An Exam. The Scores On The Exam

Two thousand students took an exam. The scores on the exam have an approximate normal distribution with a mean ? = 81 points and standard deviation ? = 15 points.Calculate the first- and third-quartile scores for this exam.The middle 50% of the exam scores are between what two values?

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Two thousand students took an exam. The scores on the exam

Question
Two thousand students took an exam. The scores on the exam have an approximate normal distribution with a mean ? = 81 points and standard deviation ? = 15 points.

Calculate the first- and third-quartile scores for this exam.
The middle 50% of the exam scores are between what two values?

find the cost of your paper