Answer
For Model 1: 1/7 + 1/7 + 1/7 + 1/7 + 1/7 + 1/7 = 6/7
Probability does not add up to 1, therefore, illegitimate
For Model 3: 1/3 + 1/6 + 1/6 + 1/6 + 1/6 + 1/6 = 1\frac{1}{6}
Probability does not add up to 1, therefore, illegitimate
For Model 4: 1 + 1 + 2 + 1 + 1 + 2 = 8
Probability does not add up to 1, therefore, illegitimate
Work Step by Step
As given above
