The table below displays data showing weight gain,in grams,for nine young rats,three from each of three litters.Three different diets (the treatments)were assigned at random to the three siblings in litter one (block 1).This was repeated for the other two litters (blocks 2 and 3). 
Conduct a Friedman test at the 0.05 level of significance to determine if there are differences between the three diets.
Definitions:
Feedback from Facial Muscles
The sensory input and psychological effects that result from the movements and configurations of the muscles in the face.
Display Rules
Cultural norms that dictate how emotions should be expressed publicly.
Emotional Expressions
The manifestations of complex psychological states through facial expressions, body language, and vocal tones that convey feelings, mood, or emotions.
Appropriate Situations
Circumstances or contexts that are suitable or fitting for a specific action, behavior, or response.
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