Lori Cook has developed the following forecasting model: ŷ = 36 + 4.3x where ŷ = demand for Kool Air conditioners and x =5 the outside temperature (° F) a) Forecast demand for the Kool Air when the temperature is 70° F. b) What is demand when the temperature is 80° F? c) What is demand when the temperature is 90° F? SOLUT`ION Given Y = 36 + 4.3X (a) X = 70˚ Y = 36 + 4.3(70) = 337 (b) X = 80˚ Y = 36 + 4.3(80) = 380 (c) X = 90˚ Y = 36 + 4.3(90) = 423
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