Question

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% prediction interval to estimate the cost in February to heat a Northeast home that is 3,100 square feet.

Heating Cost​ ($)		Square Footage		Heating Cost​ ($)		Square Footage
330		2,420		450		2,630
290		2,420		330		2,220
310		2,030		380		3,120
260		2,220		340		2,530
310		2,330		360		2,940

Determine the upper and lower limits of the prediction interval.

UPL=

LPL=

Answer 1