Standard deviation and normal distribution

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Mean- Standard Deviation- and Normal Distribution

If the mean exam score in a class of 30 students is an 80 out of 100 and the standard deviation on the exam is 15, assuming a normal distribution of grades on the exam, what percentage of students earned between 65 and 95? How alarmed should a student with a score of 49 be with his grade?

Reference no: EM13848796

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