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5.The mean grade of a class is 82% with standard deviation of 5.5%. What is the corresponding standard score of a student whose grade is

5.The mean grade of a class is 82% with standard deviation of 5.5%. What is the corresponding standard score of a student whose grade is 86%?

A. -1.1

B. 0.73

C. 0.27

D. 4

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