## Calculation of Conditional Probabilities

Let $$A$$ and $$B$$ be events. The conditional probability is defined as \ as long as $$Pr(B) \ne 0$$. This conditional probability can be interpreted as the probability that A happens assuming that we know that B is true. In other words,...

## Definition of Random Variable

The concept of Random Variable is a natural extension of the concept of a random experiment. Let's recall for that a random experiment is simply a procedure that leads to a non-deterministic outcome (meaning, we cannot predict it beforehand). For ...

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