An experiment was conducted to determine if the weight of an animal can be predicted after a given period of time on the basis of the initial weight of the animal and the amount of feed that was eaten. The following data, measured in kilograms, were recorded:

(a) Fit a multiple regression equation of the form μ _Y׀x₁, x₂ = 00 + β₁x₁ + β₂x₂.

(b) Predict the final weight of an animal having an initial weight of 35 kilograms that is fed 250 kilograms of feed.

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Final Weight, y Weight, Weight, #2 95 Initial Feed 42 33 33 45 272 226 259 77 80 100 292 39 97 311 Final Initial Feed Weight, y Weight, 1 Weight, 22 70 36 32 41 183 173 236 230 235 50 80 92 84 40 38