Probability Review

Front

What is the probability of selecting an adventure book from Roy's shelf?

Back

1/6

Front

If P(A) = 0.7 and P(B) = 0.5, how do you find P(B|A)?

Back

Use the formula P(B|A) = P(A∩B) / P(A). In this case, P(B|A) = 0.2 / 0.7 = 2/7.

Front

What is the probability of selecting two blue marbles from two bags?

Back

26.7%.

Front

How do you calculate the probability of selecting a blue marble from each of Cole's bags?

Back

Multiply the probability of selecting a blue marble from the first bag by the probability of selecting a blue marble from the second bag.

Front

What is P(not A) if P(A) = 1/4?

Back

P(not A) = 1 - P(A) = 3/4.

Front

Define probability.

Back

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

Front

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

Back

P(E) = Number of favorable outcomes / Total number of outcomes.

Front

What does P(A∩B) represent?

Back

P(A∩B) represents the probability that both events A and B occur.

Front

What is the difference between independent and dependent events?

Back

Independent events do not affect each other's outcomes, while dependent events do.

Front

How do you find the probability of the union of two events, P(A∪B)?

Back

P(A∪B) = P(A) + P(B) - P(A∩B).