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Real-Life Activities

Real-Life Math

Parapsychology tries to prove the presence of mysterious and abstract forces.

Some parapsychologists use measurements to determine whether there is a paranormal presence.

You are a parapsychologist. You test for levels of gases and sounds in the air. If the amount you find is 3 times greater than normal, you look for paranormal activity.

Which of the following should you look at more closely?

  1. Current levels of radon: 456 parts per million
    Normal levels of radon: 169 ppm

  2. Current levels of nitrogen in atmosphere: 2,849 ppm
    Normal levels: 888 ppm

  3. Current levels of background noise: 5.1 decibels
    Normal levels of background noise: 2.7 decibels

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