Determine which of the following are not valid probability distributions,and explain why not. 
Definitions:
Subjective Criteria
Standards or principles based on personal feelings, tastes, or opinions rather than objective measures.
BATNA
Stands for Best Alternative To a Negotiated Agreement, the course of action that will be taken by a party engaged in negotiation if the current negotiations fail and an agreement cannot be reached.
Negotiating Party
A negotiating party refers to an individual or group involved in discussions aimed at reaching an agreement or compromise on specific matters.
Written Agreement
A formal document in which the parties involved agree to certain terms and conditions that are put in writing.
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