Rolling a die The following figure displays several possible probability models for rolling a die. Some of the models are not legitimate. That is, they do not obey the rules. Which are legitimate and which are not? In the case of the illegitimate models, explain what is wrong.

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Probability Outcome Model 1 Model 2 Model 3 Model 4 1/7 1/3 1/3 1 1/7 1/6 1/6 1 1/7 1/6 1/6 2 S S S S S 0 1/6 1 1/7 1/6 1/6 1 1/7 1/6 1/6 2