Assume that the One-way ANOVA model (16.2) is appropriate. (a) Prepare aligned dot plots of the data (refer to Figure 16.3). Do the factor level means appear to differ? Does the variability of the observations within each factor level appear to be approximately the same for each factor level? (b) Obtain the fitted values (estimates of factor level means and the overall mean). (c) Obtain the residuals. Do they sum to zero in accord with (16.21)? (d) Obtain the analysis of variance table. (e) Test whether or not the mean number of days required for successful rehabilitation is the same for the three fitness groups. Seto (level of significance) at 0.01. State the alternatives, decision rule and conclusion