Use the Scheff test on the data in Exercise 12.13 to compare groups 1, 2, and 3

Use the Scheffé test on the data in Exercise 12.13 to compare groups 1, 2, and 3 (combined)

with groups 4 and 5 (combined). Then compare group 1 with groups 2, 3, and 4 (combined). (Hint: Go to the discussion at www.uvm.edu/~dhowell/methods7/Extras/Unequal-ncontrasts.html)