a. Compute SST, SSTR, and SSE by using the computing formulas given in Formula 13.1
b. Compare your results in part (a) for SSTR and SSE with those in Exercises 13.24–13.29, where you employed the defining formulas.
c. Construct a one-way ANOVA table.
d. Decide, at the 5% significance level, whether the data provide sufficient evidence to conclude that the means of the populations from which the samples were drawn are not all the same.