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A ten-sided number cube with the numbers 1–10 on it is rolled. Find the probability of each event. Write each answer as a fraction. 1. P(3) 2. P(1 or 2)

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Presentation on theme: "A ten-sided number cube with the numbers 1–10 on it is rolled. Find the probability of each event. Write each answer as a fraction. 1. P(3) 2. P(1 or 2)"— Presentation transcript:

1 A ten-sided number cube with the numbers 1–10 on it is rolled. Find the probability of each event. Write each answer as a fraction. 1. P(3) 2. P(1 or 2) 3. P(4 or less) 4. P(not a multiple of 3) 5. A petting zoo has five goats, four camels, and a ferret. If the zookeeper knows that only one animal got out and all animals had an equal chance of getting out, what is the chance that it was the ferret? Write the answer as a fraction, a decimal, and a percent. 6. What is the chance of drawing any king in a deck of 52 cards? Course 2, Lesson 9-2

2 ANSWERS 1. 2. 3. 4. 5., 0.10, 10%6.

3 Statistics and Probability Course 2, Lesson 9-2 HOW can you predict the outcome of future events?

4 Course 2, Lesson 9-2 Common Core State Standards © Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved. Statistics and Probability 7.SP.7 Develop a probability model and use it to find probabilities of events. Compare probabilities from a model to observed frequencies; if the agreement is not good, explain possible sources of the discrepancy. 7.SP.7a Develop a uniform probability model by assigning equal probability to all outcomes, and use the model to determine probabilities of events. 7.SP.7b Develop a probability model (which may not be uniform) by observing frequencies in data generated from a chance process.

5 Course 2, Lesson 9-2 Common Core State Standards © Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved. Statistics and Probability Mathematical Practices 1Make sense of problems and persevere in solving them. 3Construct viable arguments and critique the reasoning of others. 4Model with mathematics.

6 To find experimental and theoretical probability To predict future events Course 2, Lesson 9-2 Statistics and Probability

7 Course 2, Lesson 9-2 Statistics and Probability uniform probability model theoretical probability experimental probability

8 How did what you learned today help you answer the Course 2, Lesson 9-2 Geometry Statistics and Probability HOW can you predict the outcome of future events?

9 How did what you learned today help you answer the Course 2, Lesson 9-2 Geometry Statistics and Probability HOW can you predict the outcome of future events? Sample answers: By understanding the difference between theoretical and experimental probability By using theoretical and experimental probability to predict future events

10 Find the theoretical probability of rolling a sum of 10 when rolling two number cubes. Course 2, Lesson 9-2 Ratios and Proportional RelationshipsFunctions Statistics and Probability

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