1. Quick Start Expectations
Fill in planner and HWRS HW: WDYE p. 38 #8, 9, 26
Get a signature on HWRS
On desk: journal, calculator, HWRS, pencil, pen
Warm Up: next slide… back of HWRS

2. Show ALL work with Proper notation!!
Warm-Up Question
Show ALL work with Proper notation!!
A bag contains 3 red marbles, 7 blue marbles, and 6 yellow marbles.
What is the probability of drawing a marble that is not red?
What is the probability of drawing a marble that is either red or blue?
P(not red) = 1 – P(red)
= /16
= 13/16
P(R or B) = P(Red) + P (Blue)
= 3/16 + 7/16
= 10/16
= 5/8

4. Model how to make this tree diagram on the board and students copy in their journals.

5. The sample space for tossing three coins is the list of all possible outcomes.
There are 8 possible outcomes, and they are all equally likely.

6. P (3 coins match) = 2/8 or 1/4
P (exactly 2 coins match) = 6/8 or 3/4
No, this is not a fair game. Tevy has more chances to score a point (2 coins match), so he is more likely to win.

7. You would expect exactly 2 coins to match ¾ of the time. ¾ of 24 = 18
P (exactly 2 coins match) = 18/24 trials
Santo means that all 3 coins match sometimes. Tevy is saying the probability is less than ½.
If time, model building another tree diagram.