Warm Up

Conditional Probability &Compound Events

May 15th, 2014

Important Vocabulary!

Mutually Exclusive & Overlapping Events

𝑷 ( 𝑨∪𝑩)=𝑷 ( 𝑨 )+𝑷 (𝑩 )−𝑷 (𝑨∩𝑩)

Example

Example

Example

Independent Events

Example

Example

Example

NC Common Exam Question

Dependent Events

Example

Example

“Given”• The probability of A given B

• The probability of B given A

Example• A math teacher gave her class two tests. 25% of the

class passed both tests and 42% of the class passed the first test. What percent passed the second test given they passed the first test?

Half Sheet• Complete the questions on the half sheet with

your partner.

Homework• Worksheet