12.80 Using the table of group means and standard deviations. Refer to Exercise 12.6 (page 655). Using the table of group means and standard deviations, construct an ANOVA table similar to that on page 662.
(a) Based on the F statistic and degrees of freedom, compute the P-value. What do you conclude?
(b) Perform pairwise comparisons using the LSD method to determine which coffeehouses have different average ages.