Fundamental Counting Probability

Three coins are flipped. Using the tree diagram, how often would you expect to flip 1 tails and 2 heads (in any order)? Write your answer as a fraction, decimal, or percent.

You randomly choose one marble from the bag. What is the theoretical probability of choosing a blue marble?

Monica randomly picks 2 marbles from a bag. She keeps each marble after she picks it. The bag contains 11 plastic marbles, 9 wooden marbles, 7 glass marbles, and 8 metal marbles.

If she picks a metal marble the first time, what is the probability she will pick a second metal marble? You can write your answer as a fraction, decimal, or percent.

Use the Fundamental Counting Principle to find the total number of possible outcomes.

Probabilities must be between:

• 0 and 1

• 0 and 10

• -1 and 1

• .01 and .99

What is a set of all possible outcomes for an event?

• sample space

• probability

• impossible

• complement

An event that has a probability of zero is _____________.

• equal

• certain

• dependent

• impossible

What is it called when two events occur and the first event affects the second event?

• impossible

• dependent

• independent

• certain

What is it called if an event has a probability of one?

• impossible

• independent

• certain

• mutually exclusive

• relative frequency

• sample space

• score

• event