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Probability and Hole Card selection

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Probability and Hole Card selection - Sun Jan 22, 2012, 02:18 PM
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XXChris123's Avatar
Since: Jul 2010
Posts: 1,512
BronzeStar
If AA is considered an unfair coin it merely means that AA wins more than it loses

example of an unfair coin

You have 14 coins in a bag . 2 of them are unfair in that they have a 30% chance of coming up heads when flipped ( the rest are fair coins ). You randomly choose one coin from the bag and flip it 4 times.

What is the probability , written as a percentage , of getting 4 heads ? Round your answer to the nearest hundredth of a percent.

omg !!!!!!!!!!!!!!!!!!!!!!!!!!!!!

14 coins total
2 fair 12 unfair
2 fair are 30%
12 unfair are 50%
4 flips

2/14 X .30 X .30 X .30 X .30 = 0.0011571428571429 +

12/14 X.50 X.50 X.50 X.50 = 0.0535714285714286 = 0.054728 = 5.47 %

5.47% odds are against you here

tadah !!!!!

You have 12 coins in a bag , 4 of them are unfair in that they have a 70% of coming up heads when flipped ( the rest are fair coins ). You randomly choose one coin from the bag and flip it 2 times .

What is the probability . written as percentage , of getting 2 heads.? Round your answer to the nearest hundredth of a percent.

Good Luck
 

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