Trees are subjected to different levels of carbon dioxide atmosphere with 6% of the trees in a

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Trees are subjected to different levels of carbon dioxide atmosphere with 6% of the trees in a minimal growth condition at 350 parts per million (ppm), 10% at 450 ppm (slow growth). 47% at 550 ppm (moderate growth), and 37% at 650 ppm (rapid growth). What are the mean and standard deviation of the car- bon dioxide atmosphere (in ppm) for these trees in ppm?

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Applied Statistics And Probability For Engineers

ISBN: 9780470053041

5th Edition

Authors: Douglas C. Montgomery, George C. Runger

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