And/Or Probability

Front

What is the probability of an event?

Back

The likelihood or chance that a specific event will occur, expressed as a number between 0 and 1.

Front

What is the formula for calculating the probability of an event?

Back

Probability = (Number of favorable outcomes) / (Total number of possible outcomes)

Front

What is an outcome in probability?

Back

The result of a single trial of an experiment.

Front

What is a sample space?

Back

A set of all possible outcomes of a probability experiment.

Front

What is an event in probability?

Back

A specific outcome or a set of outcomes from a sample space.

Front

What does 'and' mean in probability?

Back

The probability of two events occurring together, calculated by multiplying their individual probabilities.

Front

What does 'or' mean in probability?

Back

The probability of either of two events occurring, calculated by adding their individual probabilities and subtracting the probability of both occurring.

Front

If a die is rolled, what is the probability of rolling a number greater than 4?

Back

1/3 (The favorable outcomes are 5 and 6, which are 2 out of 6 total outcomes.)

Front

If a jar contains 3 red, 2 green, and 5 blue marbles, what is the probability of picking a red or green marble?

Back

5/10 or 1/2 (The favorable outcomes are 3 red and 2 green, totaling 5 out of 10 marbles.)

Front

What is the complement of an event?

Back

The probability that the event does not occur, calculated as 1 minus the probability of the event.