We use the *multiplication rule* of probabilities to calculate the joint probability of two events. In other words, we are calculating the probability of these events occurring at the same time. Chapter 6 referred to this as the intersection of two events. For two independent events, the multiplication rule states the following:

Recall from Chapter 6 that P[A and B] is also known as the joint probability of Events A and B.

For example, we can use the multiplication rule to calculate the joint probability of rolling “snake eyes” with a pair of dice. We define the events as follows:

◆ Event A: Roll a 1 ...

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