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The scores on a final exam follow the normal curve with an average of 60 and an SD of 20. The instructor wishes to count the top 20% of the scores as A's, with the rest of the scores as B or lower. Which of the following final scores is the most suitable cutoff between the A's and the B's?
  • 75
  • 55
  • 65
  • 95
  • 85
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    Carlos Rodriguez <>
    This problem was contributed by a student. It is offered as it is with no warranty of any kind
    Last modified: Thu Feb 11 12:26:41 EST 1999