Score: 0 of 1 pt 45 of 5 (2 complete) HW Score: 40%, 2 of 5 pt 14.4.30-T E Quest

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Score: 0 of 1 pt 45 of 5 (2 complete) HW Score: 40%, 2 of 5 pt 14.4.30-T E Question Help Suppose a government department would like to investigate the relationship between the cost of heating a home during the month of February in the Northeast and the home's square footage. The accompanying data set shows a random sample of 10 homes Construct a 90% confidence interval to estimate the average cost in February to heat a Northeast home that is 2,800 square feet. EEB Click the icon to view the data table Determine the upper and lower limits of the co UCL = LCL = Round to two decimal places as needed.) Heating Square Heating Square Cost (S) Footage Cost (S) Footage 460 340 2,430 290 2,450 310 2,010 250 2,250 310 2,340 2,640 340 2,250 3,120 320 2,510 360 2,920 380 Print Done Enter your answer in the edit fields and then click Check Answer All parts showing Clear All Check Answer 7:55 PM 7/20/2018

Explanation / Answer

The regression equation is
Heating Cost = 97 + 0.0961 Square Footage

Given Square footage = 2800
then Heating Cost = 97 + 0.0961 *2800 = 365.6

The 90% confidence interval:
UCL = 406.9
LCL = 324.3

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