
November 22nd, 2008, 01:13 AM
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 | Grand Panjandrum | | Join Date: Nov 2005 Location: South of England
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Quote:
Originally Posted by maths_123 Can you please help me with this proof. Look at the picture.
THANKS | From the definition of expectation we have:
Now:
So:
contains  once,  twice, etc
hence:
CB
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