Which probability requires the use of the Addition Rule?

Question

independent or conditional probability , which one requires the addition rule? Please explain

Answer 1

Conditional Probability. Let me explain by starting with what is independent probability. Independent Probability is the chance of multiple events occurring consecutively. So what is the probability of picking a red marble AND a blue marble.

Conditional Probability means that the events occurring are mutually exclusive. Meaning probability of picking a red or blue. So we use the additional rule.