Review of Probability

Probability of Simple Events

• There is a bag that contains 6 white, 7 blue, 11 red, and 1 black marble. A marble is picked at random. Write each probability as a fraction, decimal, and a percent.

1. P(white) 2. P(not blue)

3. P(red or black) 4. P(yellow)

Counting Outcomes – Tree Diagrams

• A penny is tossed and a 4 sided number cube with sides of 1, 2, 3 and 4 is rolled. Draw a tree diagram to show the possible outcomes. What is the probability of getting heads and an odd number?

H

T

21

34

123

4

Counting Outcomes – Fundamental Counting Principle

• A car manufacturer makes 8 different models in 12 different colors. They also offer standard or automatic transmission. How many choices does a customer have?

Models(Colors)(Transmissions)=Total Number of Cars

8(12)(2) = 192

The customer can choose from 192 cars.

Probability of Compound Events

• A card is picked from a standard deck of 52 cards and is not replaced. A second card is picked. What is the probability that both cards are red? Write your answer as a fraction, decimal and percent.