What are the requirements for a probability distribution? (Select all that apply.)  The summation of the probabilities is < 1. Associated probabilities for each value of x. The summation of the probabilities equal 1. The summation of the probabilities is > 1. Each probability takes on a value of 0 or 1. Each value of x has the same probability. Each probability takes on values between 0 and 1 inclusive. A description of all the values of the random variable x.

Question

What are the requirements for a probability distribution? (Select all that apply.) 

The summation of the probabilities is < 1.
Associated probabilities for each value of x.
The summation of the probabilities equal 1.
The summation of the probabilities is > 1.
Each probability takes on a value of 0 or 1.
Each value of x has the same probability.
Each probability takes on values between 0 and 1 inclusive.
A description of all the values of the random variable x.

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