1. Accelerated Precalculus
September 20, 2018

2. One-Minute Question
Suppose we flip 4 coins. What is the probability that we get at least 2 coins that land “head’s up”?

3. One-Minute Question P(2) + P(3) + P(4) = C(4,2)(1/2)2(1/2)2 +
6/16 + 4/16 + 1/16 = 11/16

4. Homework Questions

5. Old Questions
There are 25 students in this class. In how many different ways can I select 5 of you to
A) work the last 5 problems of last night’s homework.
B) Stay 25 minutes after school.

6. Old Questions How many people are wearing shorts today?
1. If I choose 3 people at random from this class, what’s the probability that all three are wearing shorts?
Is this binomial?

7. Old Questions How many people are wearing shorts today?
2. If I choose 3 people at random from this class, what’s the probability that at least 1 is wearing shorts?

8. Old Questions How many people are wearing shorts today?
3. If I choose 3 people at random from this class, what’s the probability that at least 2 are wearing shorts?

9. New Question
Five teachers will meet tomorrow to look at the new GCTM budget.
1. If I arrive between 4:15 and 4:30, and if Ms. Ice arrive between 4:10 and 4:45, what is the probability that I arrive first?

10. Old Questions
Five teachers will meet tomorrow to look at the new GCTM budget.
2. If we have to look at 5 options, how many ways could we divide up these options to evaluate them?

11. Old Questions
Five teachers will meet tomorrow to look at the new GCTM budget.
2. If we have we divide up these 5 options to evaluate them, what is the probability that I get the one on green paper?

12. Old Questions
Five teachers will meet tomorrow to look at the new GCTM budget.
4. How many ways can we sit around a round table?
5. How many ways can we sit around a round table if I sit in the blue chair?

13. Quiz Questions??