Where α is number of moles of TEOS, and β is the number of moles of NH 4 OH. The parameter estimates for the equation can be seen in Table . Across all samples prepared, there was a mean population of 53 % and the RMSE was 18.94, Table . ANOVA indicated that the model was significant as the p-value was 0.014 and the F-value was 4.25, meaning H 0 was rejected. A plot of actual vs. predicted population responses, determined from the regression analysis, is presented in Fig. . Here the high experimental error can be observed, from the scattering around the regression line of fit, and wide confidence bands.