1. The height (in feet) and volume of usable lumber (in cubic feet) of 32 cherry trees are measured by a researcher. The goal is to determine if volume of usable lumber can be estimated from the height of a tree. The results are plotted below. (a) In this study, the response variable is A. neither height nor volume. The measuring instrument used to measure height is the response variable. B. volume. C. height or volume. It doesn't matter which is considered the response. D. height.
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A forester wishes to predict the volume (in cubic feet) of usable lumber in a certain species of tree using the height (in feet) and diameter (in inches) of the trees. The height and diameter of 31 trees of a certain species were measured, the trees were cut down, and the volume of usable lumber was determined. The response and explanatory variable(s) in this study are: a. Diameter as response, and volume and height as explanatory variables b. Height as response, and volume and diameter as explanatory variables c. Volume as response, and height and diameter as explanatory variables
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The height (in feet) and volume (in cubic feet) of usable lumber of 32 cherry trees are measured by a researcher. The goal is to determine if the volume of usable lumber can be estimated from the height of a tree. Which of the following statements are supported by the scatterplot? I. There is a positive association between height and volume. II. There is an outlier in the plot. III. As the height of a cherry tree increases, the volume of usable lumber it yields increases.
Wood Production. The total world wood production can be modeled by a linear function. In $1960,$ approximately $2,400$ million cubic feet of wood were produced. since then, the amount of increase has been approximately 25.5 million cubic feet per year. (Source: Earth Policy Institute) a. Let $t$ be the number of years after 1960 and $W$ be the number of million cubic feet of wood produced. Write a linear function $W(t)$ to model the production of wood. b. Use your answer to part a to estimate how many million cubic feet of wood the world produced in 2010 .
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