Family transportation costs are usually higher than most people believe because those costs include car payments, insurance, fuel costs, repairs, parking, and public transportation. A survey is conducted to determine whether there is a significant difference in monthly transportation costs formiddle-income familiesliving in four cities. A random sample of middle-income families in four major cities are asked to use their records to estimate a monthly figure for transportation costs. The Minitab results follow.

I.Whattype of experimental design is this statistical study?

II.Identify the Factor(s) of this experiment:

III.Identify the number of treatments of this experiment:

IV.Identify the responsevariable

V.Identify the experimental units