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SCENARIO 18-2 One of the most common questions of prospective house buyers pertains to the cost of heating in dollars (Y) .To provide its customers with information on that matter, a large real estate firm used the following 4 variables to predict heating costs: the daily minimum outside temperature in degrees of Fahrenheit ( ) , the amount of insulation in inches (
) , the number of windows in the house (
) , and the age of the furnace in years (
) .Given below are the EXCEL outputs of two regression models.
-Referring to Scenario 18-2, what is the 90% confidence interval for the expected change in heating costs as a result of a 1-degree Fahrenheit change in the daily minimum outside temperature using Model 1?
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