Probability

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# Probability - PowerPoint PPT Presentation

Probability. 6.4. Outcomes. Possible results of an action Examples: 6 outcomes for rolling a dice (1,2,3,4,56) 2 outcomes for flipping a coin (heads or tails). Event. The outcome or group of outcomes. Probability of an Event. Find the probability of rolling one number cube .

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## PowerPoint Slideshow about ' Probability' - eli

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Presentation Transcript

### Probability

6.4

Outcomes
• Possible results of an action
• Examples:
• 6 outcomes for rolling a dice (1,2,3,4,56)
• 2 outcomes for flipping a coin (heads or tails)
Event
• The outcome or group of outcomes
Complement
• The opposite of that event

Example:

Rain and No Rain are complements

• Probability of Event + Complement=1
Finding Odds

ODDs in Favor of an Event

ODDs Against an Event

ODDS

What are the odds that a quarter chosen at random from the five shows a horse?

1 to 4

What are the odds that it shows no horse?

4 to 1

ODDS

Consider the event of randomly choosing a quarter that shows the outline of a state.

What are the odds in favor of this event?

2 to 3

What are the odds against the event?

3 to 2

Homework
• Page 298 (2-30 even and 31)