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A Coin Game (Posted on 2004-05-20) Difficulty: 3 of 5
Alex flips a fair coin 20 times. Bert spins a fair coin 21 times. Bert wins if he gets more heads than Alex, else Alex wins. Note that Alex wins if there is a tie. What is the probability that Bert wins?

See The Solution Submitted by Brian Smith    
Rating: 3.0000 (3 votes)

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Question flip vs spin | Comment 1 of 11

It is a (well known?) fact that if you spin a coin, its p(heads).5

Are we supposed to know what it actually is or can we assume it to be .5?

-Jer


  Posted by Jer on 2004-05-20 14:08:34
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