1. P ICK UP A WARM UP PACKET. Do day 3 #1-7. I want all answers on the white board by 7:25. Lindsay and James’ groups- your presentations are next. Be ready! These people still need to answer presentation questions (no one else gets to!) Ivan, Devyn, Mackenzie, Zach W, Quest, Jair, Jamesha Absent Monday? I need your half sheet and projects…NOW!

2. S TART YOUR WARM - UP 1) What is the approximate length of HJ in the diagram? a. 292 cmb. 265 cm c. 219 cmd. 196 cm 100 cm J K G 30 o 60 o 80 cm H

3. I NTRO TO P ROBABILITY

4. V OCABULARY Outcome – possible result of a situation or experiment Event – maybe a single outcome or a group of outcomes Sample space – set of all possible outcomes

5. E XAMPLE 1: D ESCRIBE SAMPLE SPACE. a) If I toss 2 coins and count the number of heads, the sample space is… b) Choose a student in your class at random and ask how much time that student spent studying during the past 24 hours. c) In a test of new package design, you drop a carton of eggs (dozen) from a height of 1 foot and count the number of broken eggs.

6. M ORE V OCABULARY ;) probability of event – ratio of # of favorable outcomes to # of possible outcomes P(event) = favorable outcomes possible outcomes

7. H OW MUCH DO YOU KNOW ALREADY ? 1)You have 3 blue marbles, 2 green marbles, and 1 red marble in a bag. What is the probability that you will pull out a green marble? 2) What is the probability that you will pull a red marble? 3) What is the probability that you will pull a blue marble?

8. P ROBABILITY

9. W HAT DOES IT M EAN ? Probability – measure of the likelihood that an event will occur You will have homework tonight! You will have a pop quiz on probability tomorrow! You will watch a movie tomorrow in my class!

10. E XAMPLE 2: A butterfly lands at random on the edge of a ruler. Find the probability that the butterfly lands on a point between 2 and 10? Between 5 and 8?

11. Y OU T RY ! A stop light stays green for 20 seconds, yellow for 5 seconds, and red for 50 seconds. What is the probability that you will arrive at a green light?

12. E XAMPLE 3: A PLAYER THROWS DART ( S ) AT THE GIVEN BOARD. A WIN IS CONSIDERED HITTING INSIDE THE CIRCLE. a)What are the possible outcomes if a player throws one dart? b)What is the probability that a player wins with one dart? c)What are the possible outcomes if a player throws two darts? a)What is the probability that a player wins with both darts?

13. Y OU T RY : A circle is inscribed in a square target with 20 cm sides. a) Draw a picture (as to scale as possible). b) What are the possible outcomes? c) If winning is considered landing inside the circle, what is the probability of winning?

14. F AIR G AME

15. E X 4: ( FROM THE YOU TRY ) A circle is inscribed in a square target with 20 cm sides. Say you pay $1 to play a game and get $2 if you win the game. If the game fair? Should you play?

16. E XAMPLE 5: T HE FOLLOWING SHOWS A GAME AT THE FAIR. T HE CIRCLES REPRESENT BALLOONS. Y OU THROW ONE DART AT THE BOARD, IF YOU POP A BALLOON YOU WIN ! If you pay $5 to play and can win $7. Should you play? Is the game fair?

17. W ITH G ROUPS Start worksheet. We’ll come back together with 5 min to go to talk homework. The more you do now, the less you have to do later!