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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
3.4.1 Consider the density curve shown in Figure 3.4.5, which represents the distribution of diameters (measured 4.5 feet above the ground) in a population of 30-year-old Douglas fir trees. Areas under the curve are shown in the figure.What percentage of the trees have diameters
(a) between 4 inches and 10 inches?
(b) less than 4 inches?
(c) more than 6 inches?

Figure 3.4.5:
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