Splash Screen. Lesson Menu Five-Minute Check (over Lesson 12–2) Main Idea and Vocabulary Example 1:Theoretical and Experimental Probability Example 2:Theoretical.

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Lesson 10.3 – Experimental and Theoretical Probability

Probability of simple events

Main Idea and New Vocabulary Example 1: Experimental Probability

Main Idea and New Vocabulary Example 1: Experimental Probability

Independent and 10-7 Dependent Events Warm Up Lesson Presentation

Presentation transcript:

Splash Screen

Lesson Menu Five-Minute Check (over Lesson 12–2) Main Idea and Vocabulary Example 1:Theoretical and Experimental Probability Example 2:Theoretical and Experimental Probability Example 3:Real-World Example Example 4:Use Probability to Predict

Main Idea/Vocabulary experimental probability theoretical probability Find experimental and theoretical probabilities and use them to make predictions. Interactive Lab: Theoretical and Experimental Probability

Example 1 Theoretical and Experimental Probability Nikki is conducting an experiment to find the probability of getting various results when three coins are tossed. The results of her experiment are given below. What is the theoretical probability of tossing all heads on the next turn? Answer:

1.A 2.B 3.C 4.D Example 1 Marcus is conducting an experiment to find the probability of getting various results when four coins are tossed. The results of his experiment are given below. What is the theoretical probability of tossing all tails on the next turn? A.B. C.D.

Example 2 Theoretical and Experimental Probability Nikki is conducting an experiment to find the probability of getting various results when three coins are tossed. The results of her experiment are given below. According to the experimental probability, is Nikki more likely to get all heads or no heads on her next toss?

Example 2 Theoretical and Experimental Probability Answer: Nikki is more likely to get no heads on her next toss. Examine the table. Out of 80 trials, flipping all heads occurred 6 times, and flipping no heads occurred 12 times. So, the experimental probability of flipping all heads is or. And the experimental probability of flipping no heads is

1.A 2.B Example 2 A.all heads B.no heads Marcus is conducting an experiment to find the probability of getting various results when four coins are tossed. The results of his experiment are given below. According to the experimental probability, is Marcus more likely to get all heads or no heads on his next toss?

Example 3 MARKETING Eight hundred adults were asked whether they were planning to stay home for winter vacation. Of those surveyed, 560 said that they were. What is the experimental probability that an adult planned to stay home for winter vacation? There were 800 people surveyed and 560 said that they were staying home. Answer:

1.A 2.B 3.C 4.D Example 3 MARKETING Five hundred adults were asked whether they were planning to stay home for New Year’s Eve. Of those surveyed, 300 said that they were. What is the experimental probability that an adult planned to stay home for New Year’s Eve? A. B. C. D.

Example 4 MATH TEAM Over the past three years, the probability that the school math team would win a meet is Is this probability experimental or theoretical? If the team wants to win 12 more meets in the next 3 years, how many meets should the team enter? This problem can be solved using a proportion. Use Probability to Predict 3 out of 5 meets were wins 12 out of x meets should be wins. Solve the proportion.

Example 4 Write the proportion. Answer: This is an experimental probability since it is based on actual results. They should enter 20 meets. Use Probability to Predict Find the cross products. Multiply. Divide each side by 3.

1.A 2.B Example 4 A.experimental B.theoretical A. SPEECH AND DEBATE Over the past three years, the probability that the school speech and debate team would win a meet is Is this probability experimental or theoretical?

1.A 2.B 3.C 4.D Example 4 A.16 meetsB. 18 meets C.20 meetsD. 25 meets B. SPEECH AND DEBATE Over the past three years, the probability that the school speech and debate team would win a meet is If the team wants to win 20 more meets in the next 3 years, how many meets should the team enter?

End of the Lesson

Resources Five-Minute Check (over Lesson 12–2) Image Bank Math Tools Theoretical and Experimental Probability Probability: Compound Events

1.A 2.B 3.C 4.D Five Minute Check 1 A day of the week is picked at random and a number cube is tossed. Find P(begins with S and 4). A. B. C. D. (over Lesson 12-2)

1.A 2.B 3.C 4.D Five Minute Check 2 A day of the week is picked at random and a number cube is tossed. Find P(Wednesday and 3). A. B. C. D. (over Lesson 12-2)

1.A 2.B 3.C 4.D Five Minute Check 3 A bag of pencils has 3 red, 5 blue, and 8 yellow pencils. Find P(red then blue) if each pencil selected is not returned to the bag. A. B. C. D. (over Lesson 12-2)

1.A 2.B 3.C 4.D Five Minute Check 4 A bag of pencils has 3 red, 5 blue, and 8 yellow pencils. Find P(2 yellows) if each pencil selected is not returned to the bag. A. B. C. D. (over Lesson 12-2)

1.A 2.B 3.C 4.D Five Minute Check 5 A.12% B.24% C.32% D.75% Jordan makes 75% of his basketball free throws. What is the probability that he will make 4 free throws in a row? Write your answer as a percent. (over Lesson 12-2)

1.A 2.B 3.C 4.D Five Minute Check 6 Josh flips a coin and draws a card from a deck of 52. What is the probability that he will get heads and a seven? (over Lesson 12-2) A. B. C. D.

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