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- 1. 9-6 Theoretical and Experimental Probability Find and compare experimental and theoretical probabilities
- 2. Use a graphing calculator to complete the table What should the probability have been? Probability using your results Times occurred 6 5 4 3 2 1
- 3. Create definitions for theoretical and experimental probability. Fill it into a t-table
- 4. <ul><li>Suppose you have a bag with 75 marbles: 15 red, 5 white, 25 green, 20 black, and 10 blue. You draw a marble, note its color, and then put it back. You do this 75 times with these results: 12 red, 9 white, 27 green, 17 black, and 10 blue. Find each probability as a fraction in simplest form. </li></ul>Theoretical probability Experimental probability P(blue) P(black) P(green) P(white) P(red)
- 5. Suppose you surveyed the students in your class on their favorite juice flavors. Their choices were 6 apple, 10 orange, 1 grapefruit, and 3 mango. Find each probability as a fraction in simplest form. <ul><li>P(apple) </li></ul><ul><li>P(orange) </li></ul><ul><li>P(grapefruit) </li></ul><ul><li>P(not mango) </li></ul>
- 6. Ex.) Two number cubes are rolled seventy-five times and a sum of 9 is rolled ten times. What is the experimental probability of rolling a sum of 9?
- 7. Do example 2 and 3 on page 394
- 8. In a survey, 100 people were asked to name their favorite Independence Day side dishes. What is the experimental probability of macaroni salad being someone’s favorite dish? 8 coleslaw 12 Macaroni salad 25 Green salad or vegetable 55 Potato salad Number of People Side Dish
- 9. Suppose 250 people attend the city’s barbecue. How many be expected to choose macaroni salad as their favorite side dish?
- 10. In a survey, 50 people were asked to pick which movie they would see this weekend. Twenty chose Horror Story , 15 chose The Ink Well , 10 chose The Monkey House , and 5 chose Little Rabbit . What is the experimental probability of someone wanting to see The Monkey House?
- 11. <ul><li>Suppose 300 people are expected to attend a movie theater this weekend to see one of the four movies mentioned above. How many can be expected to see The Monkey House . </li></ul>
- 12. Workbook 9-6
- 13. Venn Diagram <ul><li>Experimental vs. Theoretical Probability </li></ul>
- 14. p 395: 3-18

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