Question 5:Suppose the diameter at breast height (in.) of tree... | Filo

Suppose the diameter at breast height (in.) of trees of a certain type is normally distributed with μ=8.8 and σ=2.8, as suggested in the article "Simulating a Harvester-Forwarder Softwood Thinning" (Forest Products J., May 1997 : 36-41 ) . (a) What is the probability that the diameter of a randomly selected tree will be at least 10 in.? Will exceed 10 in.? (b) What is the probability that the diameter of a randomly selected tree will exceed 20 in.? (c) What is the probability that the diameter o

Determining tree biomass It is easy to measure the "diameter at breast height" of a tree. It's hard to measure the total "aboveground biomass" of a tree, because to do this you must cut and weigh the tree. The biomass is important for studies of ecology, so ecologists commonly estimate it using a power model. Combining data on 378 trees in tropical rain forests gives this relationship between biomass y measured in kilograms and diameter x measured in centimeters: ^20 lny=-2.00 2.42 lnx Use this

Diameter of cythder A is 7 cm and the height is 14 cm. Diameter... | Filo

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