Radon-222 is a radioactive element that decays from some initial value R0 with a half-life of...

Radon-222 is a radioactive element that decays from some initial value R0 with a half-life of t = 3.7 days

according to this formula: r = r0(1/2)^ ?⁄?

a basement area is tested and found to have a 222Rn level of 7.2 pCi/L.

They test the basement every few days and get new readings:

Day: 0 2 4 6 8

Value: 7.5 5.2 3.4 2.6 1.7

Can the inspector declare that the radon level is decreasing with the expected half life from the initial value, and therefore they do not have to require a mitigation system?

Expert Solution

yes the inspector can declare that the radon level is decreasing with the expected half life time from the initial value from one sample t test the conclusion is given in the images uploaded

orchestra answered 2 years ago

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