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In a normal curve two lines are drawn. One line is two standard deviations to the left of the center, the other is one standard deviation to the right of the center. What is the percentage on the outside of the two lines?
  • 20%
  • 15%
  • 24%
  • 22%
  • 18%
  • *****
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    Carlos Rodriguez <carlos@math.albany.edu>
    This problem was contributed by a student in Elementary Statistics. It is offered as it is with no warranty of any kind
    Last modified: Wed May 13 12:29:11 EDT 1998