Question

Determine whether the following are valid probability models or not. Type “VALID” if it is valid, or type “ INVALID” if it is not.

Answer 1

Solution:

Given the probability distribution below:

To determine the validity,

Step 1: Determine whether each probability is greater than or equal to 0 and less than or equal to 1.

Step 2: Determine whether the sum of all of the probabilities equals 1.

Step 3: If Steps 1 and 2 are both true, then the probability distribution is valid.

From the above explanation steps, we have