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  • 24-05-2023
  • Mathematics
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A group of normally distributed test scores is being discussed. It is known that a score of 77 is the lowest 1/8 of the class and a score of 119 is the top 18.5% of the class. a) Find the average and standard deviation of this distribution. b) What score is required to be in the top 3% ? c) What ranking is a score of 103?

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