The following data show the systolic blood pressures (SBP) of 12 men as well as their weights.  Obtain by least squares regression the linear relationship between the weights and the SBP and test for the parameters of the regression equation.

Use ANOVA to test whether the fitted model is significant. Obtain the estimated values of SBP and hence, using the residuals, check that the assumptions underlying linear regression are satisfied.

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Weight (lb) 185 198 196 188 203 195 193 198 190 194 189 200 SBP (mmHg) 133 144 142 135 150 140 141 143 138 139 136 147