U5 Review Day 1 Probability of Events and Outcomes

Front

What is the formula to determine the probability of either event A or event B occurring?

Back

P(A or B) = P(A) + P(B) - P(A and B)

Front

Define independent events in probability.

Back

Two events are independent if the occurrence of one does not affect the occurrence of the other.

Front

What is the probability of spinning red on a spinner and picking a red marble from a bag with 2 red marbles, 3 green marbles, and 3 blue marbles?

Back

1/16

Front

How do you calculate the total number of combinations for lunch if there are 6 sandwiches, 3 types of chips, and 5 beverages?

Back

Total combinations = 6 * 3 * 5 = 90.

Front

What is the probability that a randomly chosen person owns either an SUV or a car if 31% own an SUV, 74% own a car, and 10% own both?

Back

P(SUV or Car) = 31% + 74% - 10% = 95%.

Front

What is the definition of dependent events in probability?

Back

Two events are dependent if the occurrence of one event affects the occurrence of the other.

Front

If a spinner has 4 equal sections (red, blue, green, yellow), what is the probability of landing on red?

Back

P(red) = 1/4.

Front

What is the probability of rolling a sum of 7 with two six-sided dice?

Back

P(sum of 7) = 6/36 = 1/6.

Front

How do you find the probability of two independent events occurring together?

Back

P(A and B) = P(A) * P(B) for independent events.

Front

What is the definition of a sample space in probability?

Back

The sample space is the set of all possible outcomes of a probability experiment.