A farmer used four test plots to determine the relationship between wheat yield (in
Chapter 2, Problem 77(choose chapter or problem)
A farmer used four test plots to determine the relationship between wheat yield (in kilograms) per square kilometer and the amount of fertilizer (in hundreds of kilograms) per square kilometer. The results are shown in the table. Fertilizer, x 1.0 1.5 2.0 2.5 Yield, y 32 41 48 53 (a) Find the least squares regression line for these data. (b) Estimate the yield for a fertilizer application of 160 kilograms per square kilometer.
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