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Class a particular examination on mathematics

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A teacher gives his class a particular examination on mathematics at the end of each year. The results are normally distributed with a mean test score of 62 and a standard deviation of 11. The teacher has told the class that students with a test score in the top 20% will win a special prize. Calculate the test score above which 20% of all test scores lie. Give your answer to 1 decimal place.

Reference no: EM132464241

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