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 problem on probability - am I correct ?
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Posted - 09/18/2008 :  11:00:59  Show Profile  Reply with Quote
the problem is :
An unfair coin has 2/3 probability to turn out head. If it is tossed 50 times, what is the prbability that it will turn out head even # of times.
This is my thinking
it should turn out head 2/3(50) times. = 33.33 times
of these even #s are 2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32 (16 )
Therefore the probability is 16/34 or 8/17.
Am I right?
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