Examlex
Instruction 13.32
One of the most common questions of prospective house buyers pertains to the average cost of heating in dollars (Y) .
To provide its customers with information on that matter, a large real estate firm used the following four variables to predict heating costs: the daily minimum outside temperature in degrees of Celsius (X1) , the amount of insulation in cm (X2) , the number of windows in the house (X3) and the age of the furnace in years (X4) . Given below are the Microsoft Excel outputs of two regression models.
-Referring to Instruction 13.32,what is the 90% confidence interval for the expected change in heating costs as a result of a 1 degree Celsius change in the daily minimum outside temperature using Model 1?
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