well yeah, but there's no values so it's basically the expected value of one roll times two, but i dont know hot to write a formula for the expected value of one roll
well yeah, but there's no values so it's basically the expected value of one roll times two, but i dont know hot to write a formula for the expected value of one roll
Fair die so probability of each face is 1/k.
So expected value is:
$\displaystyle
(1)(1/k)+(2)(1/k)+..+(k)(1/k)=(1/k)\sum_{i=1}^k i
$
CB
Last edited by mr fantastic; Nov 22nd 2008 at 12:30 PM.
Reason: Fixed the latex ;)