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5. The marks of ST130 exam is known to be normally distributed, with a mean 51 and standard deviation 14. If 200 students take the

5. The marks of ST130 exam is known to be normally distributed, with a mean 51 and standard deviation 14. If 200 students take the test, A. How many would you expect to score between 58 and 65? B. If 5% of the students get an A+, what is the minimum mark for an A+?

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