A regression equation is found that predicts the increased cost of a home owner's electricity bill
Given the number of holiday lights they put on the outside of their house. The equation is dol^lars =
2)5 + 0.02(light). If a house has 400 lights and a $15 increase in their electricity cost, find their
Residual.
A) $5
B) $20
C) $15
D) -$15
E) -$5

Question

Quizplus · Accepted Answer

The predicted increase in cost is calculated as 25 + 0.02(400) = 33 dollars. The actual increase is 15 dollars, so the residual is 15 - 33 = -18 dollars. However, none of the options match -18, so there might be a mistake in the options provided.

A Regression Equation Is Found That Predicts the Increased Cost