The following was confusing me, so any help would be appreciated!

Suppose we throw a fair coin 3 times. Let X be the number of heads. Find the probability distribution function of X.

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- Sep 23rd 2007, 02:47 PMclockinglyProbability question
The following was confusing me, so any help would be appreciated!

Suppose we throw a fair coin 3 times. Let X be the number of heads. Find the probability distribution function of X. - Sep 23rd 2007, 05:02 PMPlato
$\displaystyle P(X) = {{3}\choose {X}} \left( {.5} \right)^3 ,\quad X = 0,1,2,3$