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.
Follow Math Help Forum on Facebook and Google+
$\displaystyle P(X) = {{3}\choose {X}} \left( {.5} \right)^3 ,\quad X = 0,1,2,3$
View Tag Cloud