Probability. Probability: Likeliness that an event will occur.

Slides:

Advertisements

Similar presentations

ODDS vs. PROBABILITY Odds are a little different than probability. When we calculate probability, we look at the ratio of favorable outcomes to the total.

Advertisements

GOAL: IDENTIFY THE DIFFERENCE BETWEEN A DEPENDENT AND AN INDEPENDENT EVENT. Independent and Dependent Events.

Probabilities of Compound Events  Probability of Two Independent Events  If two events, A and B are independent, then the probability of both events.

Creating Tree Diagrams to find Theoretical Probability

Probability Sample Space Diagrams.

What is Probability? The study of probability helps us figure out the likelihood of something happening. In math we call this “something happening” or.

PROBABILITY  A fair six-sided die is rolled. What is the probability that the result is even?

Mutually Exclusive and Inclusive Events

Math 409/409G History of Mathematics

Simple Event Probability is the chance or likelihood that an event will happen. It is the ratio of the number of ways an event can occur to the number.

Find the probability and odds of simple events.

Compound Probability Pre-AP Geometry. Compound Events are made up of two or more simple events. I. Compound Events may be: A) Independent events - when.

Section 2 Probability Rules – Compound Events Compound Event – an event that is expressed in terms of, or as a combination of, other events Events A.

Level34567 Probability Skills I can use the probability words impossible, certain and even chance to describe the probability of an event occurring. I.

Three coins are tossed. What is the probability of getting all heads or all tails? A wheel of chance has the numbers 1 to 42 once, each evenly spaced.

Chapter 2: Rational Numbers 2.7 Probability of Compound Events.

9.7 Probability of Multiple Events. Dependent events – when the outcome of one event affects the outcome of a second event Dependent events – when the.

Simple Probability Pre-Ap Geometry. Probability measures the likelihood that a particular event will occur. The measures are express as a ratio. Simple.

Warm Up Tyler has a bucket of 30 blocks. There are

The Addition Rule TUTORIAL Summary To find the probability of event A or B, we must first determine whether the events are mutually exclusive.

 Probability: the chance that a particular event will occur.  When do people use probability ◦ Investing in stocks ◦ Gambling ◦ Weather.

Aim: How do we find the probability of compound events? 1) How many pounds is 24 ounces? 1 pound = 16 ounces 2) Evaluate 3y – 7, when y = 5. 3) Solve and.

UNIT 5: PROBABILITY Basic Probability. Sample Space Set of all possible outcomes for a chance experiment. Example: Rolling a Die.

10-2 Experimental Probability Course 3 Warm Up Warm Up Problem of the Day Problem of the Day Lesson Presentation Lesson Presentation.

Miss Zeuggin February 6th 2009

PROBABILITY (Theoretical) Predicting Outcomes. What is probability? Probability refers to the chance that an event will happen. Probability is presented.

Homework Determine if each event is dependent or independent. 1. drawing a red ball from a bucket and then drawing a green ball without replacing the first.

Learn to find the probabilities of independent and dependent events. Course Independent and Dependent Events.

Example Suppose we roll a die and flip a coin. How many possible outcomes are there? Give the sample space. A and B are defined as: A={Die is a 5 or 6}

Sect Probability. Def: Probability is the measure of the chances of an event happening A desired outcome is called a success Any other outcome is.

10-2 Experimental Probability Course 3 Warm Up Warm Up Problem of the Day Problem of the Day Lesson Presentation Lesson Presentation.

Probability of Simple Events

Pre-Algebra 9-7 Independent and Dependent Events Learn to find the probabilities of independent and dependent events.

To find the probability of two events occurring together, you have to decide whether one even occurring affects the other event. * Dependent Events—the.

Multiplication Rule Statistics B Mr. Evans. Addition vs. Multiplication Rule The addition rule helped us solve problems when we performed one task and.

Chapter 10 – Data Analysis and Probability 10.7 – Probability of Compound Events.

October 12, Objectives Content Objectives  Students will review probability rules through review of Thursday’s work.  Students will learn about.

0-11 Probability Goal: Find the probability of an event occurring. Eligible Content: A

Probability How likely it is that something will happen.

Probability Quiz. Question 1 If I throw a fair dice 30 times, how many FIVES would I expect to get?

Independent and Dependent Events Lesson 6.6. Getting Started… You roll one die and then flip one coin. What is the probability of : P(3, tails) = 2. P(less.

Section 4.2 Some Probability Rules—Compound Events.

How likely is something to happen..  When a coin is tossed, there are two possible outcomes: heads (H) or tails (T) We say the probability of a coin.

 Page  Complete Assessment.  The following represents the body temperatures of healthy students Find the.

AGENDA WARM UP LESSON 66 CORRECTIONS LESSON 67 QUESTIONS LESSON 68 EXIT CARD.

DO NOW 4/27/2016 Find the theoretical probability of each outcome. 1. rolling a 6 on a number cube. 2. rolling an odd number on a number cube. 3. flipping.

Engage NY Lesson #1 Independent and Dependent Events.

Probability GPS Algebra. Let’s work on some definitions Experiment- is a situation involving chance that leads to results called outcomes. An outcome.

International Studies Charter School.

Independent and Dependent Events

Unit 5: Probability Basic Probability.

Lesson 13.4 Find Probabilities of Compound Events

The probability of event P happening is 0. 34

Multiply the probability of the events together.

Compound Probability.

Addition and Multiplication Rules of Probability

Probability Simple and Compound.

Probability of TWO EVENTS

12-7 Probability of Compound Events (Or problems)

Probability Word Problems

Addition and Multiplication Rules of Probability

Please copy your homework into your assignment book

Probabilities of Compound Events

Probability Grade 12 Essential Math

Do Now p. 795 # 32 A B C D.

Thursday 05/16 Warm Up 200 people were surveyed about ice cream preferences. 78 people said they prefer chocolate. 65 people said they prefer strawberry.

Compound Events – Independent and Dependent

Presentation transcript:

Probability

Probability: Likeliness that an event will occur

Probability = # of Successes Total # of Possibilities

Probability = ** Successes DO NOT have to be “good” things # of Successes Total # of Possibilities

Example 1: A bag of marbles contains 4 blue marbles, 6 yellow marbles, 12 red marbles, and 2 green marbles. If a marble is drawn from the bag at random, what is the probability that it will be a green marble?

Example 2: A study finds that out of 230 drivers under the age of eighteen, 176 use their cell phones while driving. What is the probability that a driver under the age of eighteen uses their cell phone while driving?

Practice: A box of chocolates contains 4 cherry cordials, 6 caramels, 3 coconut creams, 2 peanut butter filled, and 9 chocolate truffles. If all of the candies have the same appearance, what is the probability of selecting a caramel from the box?

Probability can also be used to determine the number of successes.

# of Successes = Probability ∙ Total #

Example 3: If the probability of drawing a green marble from a bag containing 2,000 marbles is 17%, how many green marbles does the bag contain?

Practice: Kim is selling girl scout cookies. If Kim sells 231 boxes of cookies, and ⅓ of all her sales were Thin Mint cookies, how many boxes of Thin Mint cookies did Kim sell?

Mutually Exclusive Events

Mutually Exclusive Events: Two events that cannot happen at the same time - Usually involves the word “or”

Mutually Exclusive Events: Two events that cannot happen at the same time - Usually involves the word “or” Examples:

Calculating Mutually Exclusive Probabilities: To find the probability of one or the other mutually exclusive events occurring, add the probabilities together.

Example 1: You roll a six-sided die. What is the probability of obtaining a 5 or a 6?

Example 2: A bag of marbles contains 4 blue marbles, 6 yellow marbles, 12 red marbles, and 2 green marbles. If a marble is drawn from the bag at random, what is the probability that it will be a green or yellow marble?

Practice: The school has 306 freshmen, 254 sophomores, 261 juniors, and 258 seniors. What is the probability that a student selected at random will be a junior or senior?