Review

Recall some items related to conditional probability.

Conditioning definition:

P [- ∣ A] = \frac{P [ - \cap A ]}{P [ A ]}

Multiplication rule:

P [A B] = P [B ∣ A] P [A]

Division into Cases / Total Probability:

P [B] = P [B ∣ A_{1}] P [A_{1}] + \dots + P [B ∣ A_{n}] P [A_{n}]

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