1. What is the probability of rolling dice twice and getting a 4 and then a 7? Are these independent or dependent?

2. If you choose two cards from a deck, what is the probability of choosing a jack and then a queen without replacing the first card? Are these independent or dependent?

Do NowAnswer the following in your notebook:

JOKE of the DAYWhat do you call it when

a dinosaur crashes his car?

Do Now JOKE of the DAYWhy did the cookie go

to the hospital?Take out homework, then answer the following in your notebook:

Use the spinner to answer the questions.1. What is the probability

of getting an A or a B?2. What is the probability

of not getting a C?3. What is the probability

of not getting an A or E?

Agenda

• Do Now/ Hook: 5 min• Notes: 10 – 15 min• Guided Practice: 25

min• Clean Up: 5 min

We are a TEAM of CONFIDENT PROBLEM SOLVERS & EFFECTIVE COMMUNICATORS2 minutes

Announcements• HW Due Thursday• Probability Quiz

Thursday• Test Friday• SMI Tomorrow• Tutoring Sign Ups• Tickets & Auction

FRIDAY

We are a TEAM of CONFIDENT PROBLEM SOLVERS & EFFECTIVE COMMUNICATORS2 minutes

Independent Event

• The outcome of one event does not affect the outcome of the other. – WITH replacing an item

Dependent Event

• The outcome of one event affects the outcome of the other. – WITHOUT replacing an item

Compound (AND) Probability• How likely two events are to occur. – Example: What is the probability of rolling a 2 and

then rolling a 5

Example 1• What is the probability of flipping a coin twice

and it landing on heads both times?• Method 1: List all the possible outcomes• Method 2: Multiply each probability together

Example 2

What is the probability of getting a red marble and then getting a blue marble if you replace the red marble first?

Are these independent events or dependent events?

Example 3

What is the probability of getting a red marble and then getting a blue marble if you do not replace the red marble first?

Are these independent events or dependent events?

Example 4

What is the probability of rolling a 2 and then rolling a 5 on a dice?

Are these independent or dependent events?

Guided Practice

• Take a whiteboard and marker• Complete each question show your work• 1 point for each correct answer • Person who has the most points wins 6 tickets• Lose points for not showing work or talking or

drawing while we are going over the answer or

Question 1

Are these independent or dependent events?

Question 2

A.

B.

C.

D

Are these independent or dependent events?

Question 3

A.

B.

C.

D

Are these independent or dependent events?

Question 4What is the probability of spinning the spinner twice and it landing on A then C?

A. 6/12B. 5/12C. 6/144D. 5/144

Are these independent or dependent events?

Question 5If you choose two marbles, what is the probability of getting a black on first and a striped one second?

A. 1/6B. 3/36C. 3/30D. 4/6

Are these independent or dependent events?