Mathematics, 04.11.2019 21:31, horcio8460
Assume that trees are subjected to different levels of carbon dioxide atmosphere with 4% of the trees in a minimal growth condition at 340 parts per million (ppm), 11% at 460 ppm (slow growth), 47% at 540 ppm (moderate growth), and 38% at 650 ppm (rapid growth). what is the mean and standard deviation of the carbon dioxide atmosphere (in ppm) for these trees?
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, then 
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Assume that trees are subjected to different levels of carbon dioxide atmosphere with 4% of the tree...
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