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Odds - PowerPoint PPT Presentation

Odds. Odds. Probability and Odds NOT the same P(E) odds (E) = How many ways . Probability. State the odds of an event occurring, given the probability of the event: 1) . favorable + unfavorable = total. Probability.

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Odds

Odds

Probability and Odds NOT the same

P(E)

odds (E) =

How many ways

Probability

State the odds of an event occurring, given the probability of the event:

1)

favorable + unfavorable = total

Probability

State the odds of an event occurring, given the probability of the event:

2)

Probability

State the probability of an event occurring, given the odds of the event:

= favorable + unfavorable

 need total

2) 100 to 1

1) 9 : 7

favorable : unfavorable

favorable to unfavorable

P(E) =

P(E) =

Probability

A bag contains 2 red, 3 green, and 5 yellow balls. Two balls are chosen at random. Find the probability of each selection:

• P(1 red and then a yellow) (no replacement)

Total = 10

Means: IN THAT ORDER

Probability

A bag contains 2 red, 3 green, and 5 yellow balls. Two balls are chosen at random. Find the probability of each selection:

• P(red and a yellow) (no replacement)

I: R/Y:

II: Y/R:

Total = 10

Means: ANY ORDER

Probability

A bag contains 2 red, 3 green, and 5 yellow balls. Two balls are chosen at random. Find the probability of each selection:

• P(2 green) (no replacement)

Total = 10

Probability

A bag contains 2 red, 3 green, and 5 yellow balls. Two balls are chosen at random. Find the probability of each selection:

• P(2 red) (WITH replacement)
• P(3 red) (no replacement)

only 2 red!!

P(3 red) = 0

Total = 10

Homework

#6 12-4 Practice WS