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Old 07-15-2012, 04:56 AM
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htlin htlin is offline
Join Date: Aug 2009
Location: Taipei, Taiwan
Posts: 610
Default Re: question about probability

Originally Posted by nyxee View Post
the answer is very clear but how do we know when to use this not.

to clarify my question, if say P(ten heads)=p and P(not ten heads)=q (=1-p). why does using (p^1000) give the wrong answer?
p^{1000} means the probability of getting ten heads in each of the independent random trials. Is that the event you are interested in?
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