The least-squares regression equation y = 50 + 0.1x gives the yield in bushels per acre of corn when x pounds of fertilizer are applied. Predict the yield for a farmer who plans to use 320 pounds of fertilizer.
A) 82 bushels per acre
B) 16,032 bushels per acre
C) 37 bushels per acre
D) 50.32 bushels per acre

Question

Quizplus · Accepted Answer

To predict the yield for 320 pounds of fertilizer, substitute x = 320 into the equation: y = 50 + 0.1(320) = 50 + 32 = 82 bushels per acre.

The Least-Squares Regression Equation Y = 50 + 0