Splash Screen. Lesson Menu Five-Minute Check (over Lesson 12–1) Main Idea and Vocabulary Key Concept: Probability of Independent Events Example 1:Probability.

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Presentation transcript:

Splash Screen

Lesson Menu Five-Minute Check (over Lesson 12–1) Main Idea and Vocabulary Key Concept: Probability of Independent Events Example 1:Probability of Independent Events Example 2:Test Example: Use Probability to Solve a Problem Key Concept: Probability of Dependent Events Example 3:Probability of Dependent Events

Main Idea/Vocabulary compound event independent events dependent events Find the probability of independent and dependent events.

KC 1

Example 1 Probability of Independent Events The two spinners below are spun. What is the probability that both spinners will show a number greater than 6?

Example 1 Probability of Independent Events Answer:

1.A 2.B 3.C 4.D Example 1 The two spinners are spun. What is the probability that both spinners will show a number less than 4? A.B. C.D.

Example 2 A red number cube and a white number cube are rolled. The faces of both cubes are numbered from 1 to 6. What is the probability of rolling a 3 on the red number cube and rolling the number 3 or less on the white number cube? Use Probability to Solve a Problem Read the Item You are asked to find the probability of rolling a 3 on the red number cube and rolling a number 3 or less on the white number cube. The events are independent because rolling one number cube does not affect rolling the other cube. ABCDABCD

Example 2 Solve the Item First, find the probability of each event. Use Probability to Solve a Problem Then, find the probability of both events occurring. P(A and B) = P(A) ● P(B) Multiply.

Example 2 Use Probability to Solve a Problem Answer:. The answer is D.

1.A 2.B 3.C 4.D Example 2 A white number cube and a green number cube are rolled. The faces of both cubes are numbered from 1 to 6. What is the probability of rolling an even number on the white number cube and rolling a 3 or a 5 on the green number cube? A.B. C.D.

KC 1

Example 3 Probability of Dependent Events There are 4 red, 8 yellow, and 6 blue socks mixed up in a drawer. Once a sock is selected, it is not replaced. Find the probability of reaching into the drawer without looking and choosing 2 blue socks. Since the first sock is not replaced, the first event affects the second event. These are dependent events. number of blue socks total number of socks

Example 3 Probability of Dependent Events total number of socks after one blue sock is removed number of blue socks after one blue sock is removed Answer: BrainPop: Probability: Compound Events

1.A 2.B 3.C 4.D Example 3 There are 6 green, 9 purple, and 3 orange marbles in a bag. Once a marble is selected, it is not replaced. Find the probability that two purple marbles are chosen. A. B. C. D.

End of the Lesson

Resources Five-Minute Check (over Lesson 12–1) Image Bank Math Tools Theoretical and Experimental Probability Probability: Compound Events

1.A 2.B 3.C 4.D Five Minute Check 1 A.12 outcomes B.24 outcomes C.36 outcomes D.72 outcomes Determine the number of outcomes using a tree diagram if two number cubes are rolled. (over Lesson 12-1)

1.A 2.B 3.C 4.D Five Minute Check 2 A.7 outcomes B.12 outcomes C.16 outcomes D.24 outcomes Determine the number of outcomes using a tree diagram if four kinds of candy come in either red, blue, or yellow wrappers. (over Lesson 12-1)

1.A 2.B 3.C 4.D Five Minute Check 3 A.24 outcomes B.36 outcomes C.72 outcomes D.144 outcomes Use the Fundamental Counting Principle to find the number of possible outcomes if a month of the year is picked at random and a quarter is flipped. (over Lesson 12-1)

1.A 2.B 3.C 4.D Five Minute Check 4 A.28 outcomes B.784 outcomes C.2,401 outcomes D.16,384 outcomes Use the Fundamental Counting Principle to find the number of possible outcomes if a 4-digit code is created using the numbers 0–6. (over Lesson 12-1)

1.A 2.B 3.C 4.D Five Minute Check 5 A.352 possible ID numbers B.1,676 possible ID numbers C.15,600 possible ID numbers D.676,000 possible ID numbers A university gives each student an ID number with 2 letters (A–Z) followed by 3 digits (0–9). How many possible ID numbers are there? (over Lesson 12-1)

1.A 2.B 3.C 4.D Five Minute Check 6 A.3 B.4 C.12 D.64 Lindsey and Barbara are going to a pizza shop. They can order a pepperoni, sausage, Canadian bacon, or hamburger pizza. The pizzas can be made thin, regular, or thick crust. How many different pizzas can they order? (over Lesson 12-1)

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