Refer to the study described in Exercise 14.11.
a. Perform appropriate F tests and draw conclusions from these tests concerning the effects of the percentages of sweetener, air, and milk fat on the sensory ratings. Use α = .05.
b. Are the conclusions from the F tests consistent with your observations from the ­profile plots?
In exercise

%- 15-333 333 222 469 461 864 lk 29 38 36 35 34 38 36 36 37 34 24 23 28 37 39 35 26 29 25 0.222 33 | 31 29 34 35 26 27 25 2% 27 28 26 34 38 39 35 35 34