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Posers and Puzzles

Posers and Puzzles

  1. Standard member mikelom
    Ajarn
    25 Mar '13 12:59
    Ploy is hoping to get a 90% on her math test, but she would be happy with any score within 10 points of 9. Find the range of score ploy would be happy with on her math test.

    -m.
  2. Standard member talzamir
    Art, not a Toil
    26 Mar '13 10:54
    "Within ten points of nine" is a bit hard to understand. The most obvious way is that it's a 100-point exam, and 90% +/- 10 percentiles, or 90 points +/- 10 points, means that 80 pts plus is enough?