The Eurelian Federal Trade Commission annually ranks varieties of domestic cigarettes according to their tar, nicotine, and carbon monoxide (CO) contents. Each of these is considered to be hazardous to health. Past studies have shown that increases in the tar and nicotine contents of a cigarette are accompanied by an increase in the carbon monoxide emitted from the cigarette smoke. Data from last year are given in the following table, together with some MINITAB output.

Analysis of Variance Source DF SS MS F P Regression 2 494.31 247.15 121.25 0 Residual Error 22 44.84 2.04 Total 24 539.15 Model 3: The regression equation is CO : 11.8 + 25.1 weight Predictor Coef StDev T P Constant -1 1.795 9.722 -1.21 0.237 weight 25.068 9.98 2.51 0.019 S24.289 RSq:21.53% RSq(adj):18.10% Analysis of Variance Source DF SS Regression 1 Residual Error 23 Total 24 (a) Fill in the missing numbers of the AnalysisofVariance table for MODEL I. (b) Do the data provide suicient evidence to indicate that the tar and nicotine in the model I contribute information for the prediction of CO comparing with Model 3 at 5% signicant level