APFIVE Linear Regression Prediction
A biologist modeled the relationship between plant growth (y, in centimeters) and the amount of fertilizer applied (x, in grams) using the least-squares regression line ŷ = 8.2 + 1.4x. For this model, R² = 0.78 and s = 2.3. What is the predicted plant growth for a plant that receives 5 grams of fertilizer?
A
15.2 cm
B
15.2 cm with 78% accuracy
C
15.2 ± 4.5 cm
D
15.2 ± 2.3 cm
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