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Experimental Probability. 11-2. Course 2. Warm Up. Problem of the Day. Lesson Presentation. Experimental Probability. 11-2. Course 2. Warm Up 1. A jar contains 6 red, 8 blue, and 10 white marbles. Would you be more likely to pull out a red or a blue marble?

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11-2

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  1. Experimental Probability 11-2 Course 2 Warm Up Problem of the Day Lesson Presentation

  2. Experimental Probability 11-2 Course 2 Warm Up 1.A jar contains 6 red, 8 blue, and 10 white marbles. Would you be more likely to pull out a red or a blue marble? Determine if the event is impossible, unlikely, as likely as not, likely, or certain. 2.Attendance at a city council meeting is at 100%. Mr. Lloyd is a council member. How likely is it that Mr. Lloyd is at the meeting? blue certain

  3. Experimental Probability 11-2 Course 2 Problem of the Day The probability of Liana making a free throw was 2 3 . If she made 24 of her free throws, how many did she miss? 12

  4. Experimental Probability 11-2 Course 2 Learn to find experimental probability.

  5. Experimental Probability 11-2 Course 2 Insert Lesson Title Here Vocabulary experimental probability

  6. Experimental Probability 11-2 Course 2 Experimental probability is one way of estimating the probability of an event. The experimental probability of the event is found by comparing the number of times an event occurs to the total number of trials. The more trials you have, the more accurate the estimate is likely to be.

  7. Experimental Probability 11-2 Course 2 number of times an event occurs probability  total number of trials

  8. Experimental Probability 11-2 number of times an event occurs total number of trials P(event) number of jumps landed number of jumps attempted P(jumps landed) 7 12 = The experimental probability that Sasha will land her next jump is . 7 12 Course 2 Additional Example 1: Sports Application During skating practice, Sasha landed 7 out of 12 jumps. What is the experimental probability that she will land her next jump? Substitute data from the experiment.

  9. Experimental Probability 11-2 Writing Math “P(event)” represents the probability that an event will occur. For example, the probability of a flipped coin landing heads up could be written as “P(heads).” Course 2

  10. Experimental Probability 11-2 number of times an event occurs total number of trials P(event) number of free throws made number of free throws attempted P(free throws made) 9 10 = = 90% The experimental probability that Martha will make the next free throw is or 90%. 9 10 Course 2 Insert Lesson Title Here Check It Out: Example 1 During basketball practice, Martha made 9 out of 10 free throws. What is the experimental probability that she will make her next attempt? Substitute data from the experiment and write as a percent.

  11. Experimental Probability 11-2 32 55 . Course 2 Additional Example 2A: Application Students have checked out 55 books from the library. Of these, 32 books are fiction. What is the experimental probability that the next book checked out will be fiction? number of fiction books checked out total number of books checked out P(fiction)  32 55 Substitute data.  The experimental probability that the next book checked out will be fiction is approximately

  12. Experimental Probability 11-2 23 55 . Course 2 Additional Example 2B: Application What is the experimental probability that the next book checked out will be nonfiction? number of nonfiction books checked out total number of books checked out P(nonfiction)  23 55  Substitute data. The experimental probability that the next book checked out will be nonfiction is approximately

  13. Experimental Probability 11-2 number of pears selected total number of fruit selected P(pear)  18 47 . Course 2 Insert Lesson Title Here Check It Out: Example 2A Students have a fruit choice for lunch of an apple or a pear. So far 18 of 47 students have selected pears. What is the experimental probability that the next fruit selected will be a pear? 18 47 Substitute data.  The experimental probability that the next fruit selected will be a pear is approximately

  14. Experimental Probability 11-2 number of apples selected total number of fruit selected P(apple)  29 47 . Course 2 Insert Lesson Title Here Check It Out: Example 2B What is the experimental probability that next fruit selected will be an apple? 29 47 Substitute data.  The experimental probability that the next fruit selected will be an apple is approximately

  15. Experimental Probability 11-2 Course 2 Insert Lesson Title Here Lesson Quiz 1. In a soccer shoot-out, Bryan made 4 out of 9 goals. What is the experimental probability that he will make the next shot? 2. It has rained on the last 2 out of 10 Fourth of July parades in Swanton. A. What is the experimental probability that it will rain this year on July 4? B. What is the experimental probability that it will not rain this year? 4 9 1 5 4 5

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