Warm Up There are 30 marbles in a bag. 10 are blue, 7 are red, 6 are yellow, and 7 are purple. 1)What is the probability of getting a red marble? 2)What.

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Presentation transcript:

Warm Up There are 30 marbles in a bag. 10 are blue, 7 are red, 6 are yellow, and 7 are purple. 1)What is the probability of getting a red marble? 2)What is the probability of getting a yellow or a blue? 3)What is the probability of getting an orange?

Probability Monday May 12 th, 2014

Vocabulary to know… Outcome Sample Space Event Probability Theoretical Probability Complement Odds Favorable Outcome Experimental Probability Union Intersection Experiment Survey

THEORETICAL PROBABILITY

Example

Complement If the probability of you getting an A in this class is 78%, what is the probability that you do not get an A?

Example

Odds

Experimental Probability

Example

Lesson Check

The difference between…. AND When you are asked to find the probability of Event 1 AND Event 2 happening, they both must occur. This is called the INTERSECTION of two sets. Operation: Multiplication OR When you are asked to find the probability of Event 1 OR Event 2 happening only one, or both could occur. This is called the UNION of two sets. Operation: Addition Notation: P ∩ Q Notation: P U Q

The difference between…. ANDOR Notation: P ∩ Q Notation: P U Q

Example List the sample space for rolling a dice What about rolling two die? What is the probability of rolling an even number on the first AND a 2 on the second? What is the probability of rolling an even number on the first OR a 2 on the second?

Experimental vs. Theoretical Work on the Coin Flip Activity sheet with your partner. Answer the questions on the back.

Homework

Probability: Review & Frequency Tuesday May 13 th, 2014

Warm Up Complete the half sheet!

Solutions

NC COMMON EXAM ?

Frequency

Example What is the probability of someone having home runs? What is the probability of someone having 2-9 home runs?

Activity Choose a question to ask at least 15 of your classmates. You must have at least 3 choices Make a Frequency Table Example: Do you prefer chocolate, vanilla, or strawberry ice cream? Ice CreamFrequency Chocolate7 Vanilla6 Strawberry2

Activity Now create two questions to go along with your table following the guidelines below: 1)What is the probability of _____? 2)What is the probability of ______ or ______? Ask your partner to answer the questions using your table! Ice CreamFrequency Chocolate7 Vanilla6 Strawberry2

Homework Worksheet