Chemical engineers at Tokyo Metropolitan University analyzed urban air specimens for the presence of low
molecular-weight di carboxylic acid (Environmental Science & Engineering, Oct. 1993). The di carboxylic acid (as a percentage of total carbon) and oxidant concentrations for 19 air specimens collected from urban
Tokyo are listed in the table above. SAS printouts for the straight-line model relating di carboxylic acid percentage (y) to oxidant concentration (x) are also provided on pages 619-621. Conduct a complete residual analysis
