Reading 8: Probability Concepts-LOS e 习题精选 2011, addition, border, center, style

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Session 2: Quantitative Methods: Basic Concepts
Reading 8: Probability Concepts

LOS e: Define and explain the multiplication, addition, and total probability rules

 

 

The unconditional probability of an event, given conditional probabilities, is determined by using the:

A) addition rule of probability.

B) total probability rule.

C) multiplication rule of probability.

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The total probability rule us used to calculate the unconditional probability of an event from the conditional probabilities of the event given a mutually exclusive and exhaustive set of outcomes. The rule is expressed as:

P(A) = P(A|B₁)P(B₁) + P(A|B₂)P(B₂) + ... + P(A|B_n)P(B_n)

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The multiplication rule of probability is used to calculate the:

A) probability of at least one of two events.

B) unconditional probability of an event, given conditional probabilities.

C) joint probability of two events.

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The multiplication rule of probability is stated as: P(AB) = P(A|B) × P(B), where P(AB) is the joint probability of events A and B.