Cellulon, a manufacturer of home insulation, wants to develop guidelines for bui

Question

Cellulon, a manufacturer of home insulation, wants to develop guidelines for builders and consumers on how the thickness of the insulation in the attic of a home and the outdoor temperature affect natural gas consumption. In the laboratory, it varied the insulation thickness and temperature. A few of the findings are:

How much natural gas can homeowners expect to use per month if they install 6 inches of insulation and the outdoor temperature is 47 degrees F? (Round your answer to 2 decimal places.)

What effect would installing 7 inches of insulation instead of 6 have on the monthly natural gas consumption (assuming the outdoor temperature remains at 47 degrees F)? (Round your answers to 2 decimal places.)

, logically, as the amount of insulation and outdoor temperature
, the consumption of natural gas .

Cellulon, a manufacturer of home insulation, wants to develop guidelines for builders and consumers on how the thickness of the insulation in the attic of a home and the outdoor temperature affect natural gas consumption. In the laboratory, it varied the insulation thickness and temperature. A few of the findings are:

Explanation / Answer

a) Substitute, X1 with 6 and X2 with 47 in the regression equation.

Gas consumption 116.22-2.09*6-1.56*47=30.36 cubic feet

b) Gasconsumption: 116.22-2.09*7-1.56*47=28.27 cubic feet

c) With decrease in 1 inch of insulation, gas consumption is supposed to increase by 2.09 cubic feet and with 1 degree Farheinheit decrease in outdoor temperature, the gas consumption is supposed to incraese by 1.56 cubic feet. This is logical.

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