Lesson 9-1 Pages 370-373 Simple Events Lesson Check Ch 8.
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Transcript of Lesson 9-1 Pages 370-373 Simple Events Lesson Check Ch 8.
![Page 1: Lesson 9-1 Pages 370-373 Simple Events Lesson Check Ch 8.](https://reader034.fdocuments.in/reader034/viewer/2022051018/56649e7b5503460f94b7bc60/html5/thumbnails/1.jpg)
Lesson 9-1 Pages 370-373
Simple Events
Lesson Check Ch 8
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What you will learn!
How to find the probability of simple events.
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OutcomeOutcomeSimple eventSimple eventProbabilityProbabilityRandomRandomComplementary eventComplementary event
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What you really need to know!
The probability of an event is a ratio that compares the number of favorable outcomes to the number of possible outcomes. Outcomes occur at random if each outcome occurs by chance.
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What you really need to know!
Two events that are the only ones that can possibly happen are complementary events. The sum of the probabilities of complementary events is 1.
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What you really need to know!
outcomes possible ofnumber
outcomes favorable ofnumber P(event)
possible
favorableP(event)
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Example 1:
If the spinner shown below is spun once, what is the probability of its landing on an odd number?
possible
favorableP(event)
2
1
4
2P(odd)
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Example 2:
A game requires spinning the spinner shown below twice. If the sum of the two spins is 6 or greater, the player wins. What is the probability of winning the game?
1, 11, 1 2, 12, 1 3, 13, 1 4, 14, 1
1, 21, 2 2, 22, 2 3, 23, 2 4, 24, 2
1, 31, 3 2, 32, 3 3, 33, 3 4, 34, 3
1, 41, 4 2, 42, 4 3, 43, 4 4, 44, 4
1, 11, 1 2, 12, 1 3, 13, 1 4, 14, 1
1, 21, 2 2, 22, 2 3, 23, 2 4, 24, 2
1, 31, 3 2, 32, 3 3, 33, 3 4, 34, 3
1, 41, 4 2, 42, 4 3, 43, 4 4, 44, 4
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1, 11, 1 2, 12, 1 3, 13, 1 4, 14, 11, 21, 2 2, 22, 2 3, 23, 2 4, 24, 21, 31, 3 2, 32, 3 3, 33, 3 4, 34, 31, 41, 4 2, 42, 4 3, 43, 4 4, 44, 4
8
3
16
6
possible
favorableP(winning)
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Example 3:
A game requires spinning the spinner shown below twice. If the sum of the two spins is 6 or greater, the player wins. What is the probability of not winning the game?
1, 11, 1 2, 12, 1 3, 13, 1 4, 14, 1
1, 21, 2 2, 22, 2 3, 23, 2 4, 24, 2
1, 31, 3 2, 32, 3 3, 33, 3 4, 34, 3
1, 41, 4 2, 42, 4 3, 43, 4 4, 44, 4
1, 11, 1 2, 12, 1 3, 13, 1 4, 14, 1
1, 21, 2 2, 22, 2 3, 23, 2 4, 24, 2
1, 31, 3 2, 32, 3 3, 33, 3 4, 34, 3
1, 41, 4 2, 42, 4 3, 43, 4 4, 44, 4
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1, 11, 1 2, 12, 1 3, 13, 1 4, 14, 11, 21, 2 2, 22, 2 3, 23, 2 4, 24, 21, 31, 3 2, 32, 3 3, 33, 3 4, 34, 31, 41, 4 2, 42, 4 3, 43, 4 4, 44, 4
8
5
16
10
possible
favorableP(losing)
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Example 3: Method 2
1 A)P(not P(A)
1 P(not win)8
3
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P(not win)8
31
P(not win)8
3
8
8
P(not win)8
5
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Page 372
Guided Practice
#’s 4-9
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Pages 370-371 with someone at home and study
examples!
Read:
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Homework: Page 372-373
#’s 10-28
#’s 31-44
Lesson Check 9-1
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50 Total Kids
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Link to Math Review Practice
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Page
584
Lesson 9-1Lesson Check 9-1
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Lesson Check 9-1