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One thousand draws are made at random from a box with replacement. The box contains two tickets one with the number 1 and one with the number 2. 530 draws turn out to be 1 and the remaining 470 are 2. How much is the sum?
  • 1500
  • 1000
  • 1530
  • 1470
  • 1560
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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