1. 6/2/15 – Warm Up When rolling 2 dice…
This is Sheet #8
When rolling 2 dice…
Which sum(s) do you expect to roll the most?
Which sum(s) should you roll the least?
What is the probability of getting a sum of 4?
HW check
today!

2. Pre-Algebra Mrs. Spanier
Compound Probability
Pre-Algebra
Mrs. Spanier

3. Find the probability of spinning an odd number and getting tails.
Example 1
Find the probability of spinning an odd number and getting tails.
P(odd) = 4/8
P(T) = ½

4. Problem 2
There are 6 red, 3 green, 5 white, 7 yellow, and 2 blue suckers in a bag. Mrs. Spanier lets you pick 2.
Find P(both green)

5. Find P(red, then yellow)
Problem 2
There are 6 red, 3 green, 5 white, 7 yellow, and 2 blue suckers in a bag. Mrs. Spanier lets you pick 2.
Find P(red, then yellow)

6. Problem 2
There are 6 red, 3 green, 5 white, 7 yellow, and 2 blue suckers in a bag. Mrs. Spanier lets you pick 1.
Find P(red OR yellow)
Add to notes on GO – if OR then ADD, if AND then MULTIPLY.

7. Write in the “notes” section on your GO…
When do you ADD and when do you MULTIPLY probabilities?

8. Problem 3
A friend asks you to choose 4 cards from a standard deck. What is the probability you will pick all 4 aces?

9. Problem 3
A friend asks you to choose 4 cards from a standard deck. What is the probability you will pick all 4 aces?

10. The End