Exercise 23, page 159 Roadway congestion a costly ItemIn both time wasted, and fuel wasted. Let X represent the average annual hours per person spent traffic delays and let Y represent the average annual gallons of fuel wasted per person in traffic delays . ) Draw a scatter diagram for the data. ) Computer (Coefficient of Correlation ). ) there a correlation ? x(hr) Y (gal) 28 48 53 20 35 20 18 5