Independent and Dependent Concepts

What is the probability of picking a blue marble, putting it back in the bag, then picking a red marble?

If you roll a die and flip a coin, what is the probability of rolling a 5 and getting heads?

A class has 10 girls and 15 boys. If two students are chosen at random, what is the probability that they are both girls?

What is the probability of landing on blue twice in a row?

What is the probability of picking a blue marble?

Draw a red marble, keep it, then draw a blue marble.

• Independent

• Dependent

How do you find compound probability?

• Multiply your probabilities
• Add your probabilities
• Divide your probabilities
• Subtract your probabilities

What is the probability of picking a green marble, keeping it, then picking another green marble?

A jar contains 12 caramels, 7 mints and 16 dark chocolates. What is the probability of selecting a dark chocolate and then a caramel?

• 12/35 x 12/34

• 16/35 x 12/34

• 16/35 x 12/35

• 12/35 x 16/34

An event that consists of two or more events

•  event
• dependent events
• experiment
• compound event