The Editors of a National Automotive Magazine Recently Studied 30

Multiple Choice

The editors of a national automotive magazine recently studied 30 different automobiles sold in the United States with the intent of seeing whether they could develop a multiple regression model to explain the variation in highway miles per gallon.A number of different independent variables were collected.Included in these were two variables described as follows: If these two variables are to be included in a regression model,how many additional variables will be needed?

A) 6
B) 2
C) 8
D) 4