The figure contains a scatter plot of 20 data points for white pine trees and the linear

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The figure contains a scatter plot of 20 data points for white pine trees and the linear regression model for this data. 

Height (ft) 25.0 20.0 15.0 10.0 5.0 0.0 0.0 5.0 y = 0.74x + 2.83 10.0 15.0  Dbh (in) 20.0 25.0 30.0

(A) Interpret the slope of the model. 

(B) What is the effect of a 1-in. increase in Dbh? 

(C) Estimate the height of a white pine tree with a Dbh of 25 in. Round your answer to the nearest foot. 

(D) Estimate the Dbh of a white pine tree that is 15 ft tall. Round your answer to the nearest inch.

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