Probability (Multiplication and Addition Rules)

Front

What is the probability of an event?

Back

The probability of an event is a measure of the likelihood that the event will occur, expressed as a number between 0 and 1.

Front

What are independent events in probability?

Back

Independent events are events where the occurrence of one event does not affect the occurrence of another event.

Front

What are dependent events in probability?

Back

Dependent events are events where the occurrence of one event affects the occurrence of another event.

Front

What does mutually exclusive mean in probability?

Back

Mutually exclusive events are events that cannot occur at the same time.

Front

What does not mutually exclusive mean in probability?

Back

Not mutually exclusive events are events that can occur at the same time.

Front

What is the addition rule for probability?

Back

The addition rule states that the probability of the occurrence of at least one of two mutually exclusive events is the sum of their individual probabilities.

Front

What is the multiplication rule for independent events?

Back

The multiplication rule states that the probability of the occurrence of two independent events is the product of their individual probabilities.

Front

If P(A) = 0.3 and P(B) = 0.5, what is P(A and B) if A and B are independent?

Back

P(A and B) = P(A) * P(B) = 0.3 * 0.5 = 0.15.

Front

If P(A) = 0.4 and P(B) = 0.6, what is P(A or B) if A and B are mutually exclusive?

Back

P(A or B) = P(A) + P(B) = 0.4 + 0.6 = 1.0.

Front

What is the formula for finding the probability of not A?

Back

P(not A) = 1 - P(A).