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A Set of Final Examination Grades in a Calculus Course

Question 66

Essay

A set of final examination grades in a calculus course was found to be normally distributed with a mean of 69 and a standard deviation of 9.
-What percentage of students scored between 81 and 89?

Correct Answer:

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.0536
P(81 ≤ x ≤ 89)...

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