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The average grade for an exam is 74, and the standard deviation is 7. Grades are curved to follow a normal distribution and 12% of

The average grade for an exam is 74, and the standard deviation is 7.

Grades are curved to follow a normal distribution and 12% of the class are given A grades.

a)What is the lowest possible A and the highest possible B?

b)What is the 60th percentile grade?

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