A Random Sample of Records of Electricity Usage of Homes

Multiple Choice

A random sample of records of electricity usage of homes in the month of July gives the amount of electricity used and size (in square feet) of 135 homes.A regression was done to predict the amount of electricity used (in kilowatt-hours) from size.The residuals plot indicated that a linear model is appropriate.The model is
= 1,240 + 0.5 size.How much electricity would you predict would be used in a house that is 2,372 square feet?

A) 54 kilowatt-hours
B) 2,264.00 kilowatt-hours
C) 1,186 kilowatt-hours
D) 2,426 kilowatt-hours
E) 3,612.5 kilowatt-hours