Probability Practice & Review

Front

What is the probability of selecting one green marble from Bag A and one black marble from Bag B if Bag A contains 9 red marbles and 3 green marbles, and Bag B contains 9 black marbles and 6 orange marbles?

Back

3/20

Front

What type of probability is determined by conducting an experiment, such as flipping a coin 20 times?

Back

Experimental probability

Front

In a box containing 3 black pens, 7 blue pens, and 5 red pens, what is the probability of randomly selecting a red or black pen?

Back

8/15

Front

If a box contains 5 purple marbles, 3 green marbles, and 2 orange marbles, what is the probability of drawing two purple marbles without replacement?

Back

2/9

Front

When rolling a regular 6-sided die, what is the probability of rolling a number less than or equal to 4?

Back

2/3

Front

Define theoretical probability and provide an example.

Back

Theoretical probability is the likelihood of an event occurring based on all possible outcomes. For example, the probability of rolling a 3 on a 6-sided die is 1/6.

Front

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

Back

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

Front

Explain the difference between independent and dependent events in probability.

Back

Independent events are those whose outcomes do not affect each other, while dependent events are those where the outcome of one event affects the outcome of another.

Front

What is the probability of drawing a red marble from a bag containing 4 red, 5 blue, and 6 green marbles?

Back

4/15

Front

How do you calculate the probability of multiple independent events occurring together?

Back

Multiply the probabilities of each individual event.