Splash Screen. Lesson Menu Five-Minute Check (over Lesson 9–6) Main Idea and Vocabulary Example 1:Experimental Probability Example 2:Experimental and.

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Splash Screen

Lesson Menu Five-Minute Check (over Lesson 9–6) Main Idea and Vocabulary Example 1:Experimental Probability Example 2:Experimental and Theoretcal Probability Example 3:Experimental and Theoretical Probability Example 4:Real-World Example: Predict Future Events Example 5:Real-World Example: Predict Future Events

Main Idea/Vocabulary theoretical probability experimental probability Find and compare experimental and theoretical probabilities.

Example 1 Experimental Probability A spinner is spun 50 times, and it lands on the color blue 15 times. What is the experimental probability of spinning blue? Answer:

1.A 2.B 3.C 4.D Example 1 A marble is pulled from a bag of colored marbles 30 times, and 18 of the pulls result in a yellow marble. What is the experimental probability of pulling a yellow marble? A. B. C. D.

Example 2 Experimental and Theoretical Probability The graph below shows the results of an experiment in which a number cube is rolled 30 times. Find the experimental probability of rolling a 5. Answer:

1.A 2.B 3.C 4.D Example 2 The graph shows the results of an experiment in which a coin was tossed 150 times. Find the experimental probability of tossing heads for this experiment. A. B. C. D.

Example 3 Experimental and Theoretical Probability Compare the experimental probability you found in Example 2 to its theoretical probability. Answer:

1.A 2.B 3.C 4.D Example 3 The graph shows the results of an experiment in which a coin was tossed 150 times. Compare the experimental probability of tossing heads to its theoretical probability. A. B. C. D.....

Example 4 MOVIES In a survey, 50 people were asked to pick which movie they would see this weekend. Twenty chose Brad’s 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? There were 50 people surveyed and 10 chose The Monkey House. Predict Future Events Answer:

1.A 2.B 3.C 4.D Example 4 SPORTS In a survey, 100 people were asked to pick which sport they would watch on TV over the weekend. Thirty-five chose football, 20 chose basketball, 25 chose hockey, and 20 chose soccer. What is the experimental probability of someone wanting to watch football? A.B. C.D.

Example 5 Predict Future Events MOVIES In a survey, 50 people were asked to pick which movie they would see this weekend. Twenty chose Brad’s Story, 15 chose The Ink Well, 10 chose The Monkey House, and 5 chose Little Rabbit. Suppose 300 people are expected to attend a movie theater this weekend to see one of the four movies. How many can be expected to see The Monkey House? 1 ● 300 = 5 ● xFind the cross products. Write a proportion. 300= 5xMultiply.

Example 5 Predict Future Events Answer: About 60 people can be expected to see The Monkey House. 60= xDivide each side by 5.

1.A 2.B 3.C 4.D Example 5 A.300 B.375 C.525 D.500 In a survey, 100 people were asked to pick which sport they would watch on TV over the weekend. Thirty-five chose football, 20 chose basketball, 25 chose hockey, and 20 chose soccer. Suppose 1,500 people are expected to watch sports on TV this weekend. How many can be expected to watch football?

End of the Lesson

Resources Five-Minute Check (over Lesson 9–6) Image Bank Math Tools Act It Out Probability of Events

1.A 2.B 3.C 4.D Five Minute Check 1 (over Lesson 9-6) A.6 B.24 C.12 D.8 Solve the problem by acting it out. Four friends all shake hands with one another. How many handshakes take place?

1.A 2.B 3.C 4.D Five Minute Check 2 A.3 B.9 C.6 D.5 Solve the problem by acting it out. Liz needs to clean her room, walk the dog, and do her homework. How many ways can she do these three things? (over Lesson 9-6)

1.A 2.B 3.C 4.D Five Minute Check 3 A.25 B.20 C.120 D.125 Solve the problem by acting it out. Five friends ran a race. How many possible ways could the friends have finished the race? (over Lesson 9-6)

1.A 2.B 3.C 4.D Five Minute Check 4 A.20% B.25.2% C.19% D.23.4% Diego bought a pair of $58 jeans at a sale price of $47. What was the approximate percent of decrease from the original price to the sale price? (over Lesson 9-6)

1.A 2.B 3.C 4.D Five Minute Check 5 A.84 B.54 C.81 D.27 Three students are to be chosen from auditions of 9 students to be leads in the school play. In how many ways can these three students be chosen? (over Lesson 9-6)

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