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Mar
4
revised Simple probability Question?
added 4 characters in body
Mar
4
answered Simple probability Question?
Mar
4
revised How to find $E(f(f(f(\ldots f(x)))$
Clarified based on OP's input.
Mar
4
suggested suggested edit on How to find $E(f(f(f(\ldots f(x)))$
Mar
4
awarded  Organizer
Mar
4
revised How to find $E(f(f(f(\ldots f(x)))$
latex script...
Mar
4
suggested suggested edit on How to find $E(f(f(f(\ldots f(x)))$
Mar
4
revised Variance of the number of balls between two specified balls
Edited to add a bit more clarity.
Mar
4
suggested suggested edit on Variance of the number of balls between two specified balls
Mar
4
comment Simple Symmetric Random Walk : $P_{00}^{2n}=\binom{2n}{n}\left(\dfrac{1}{2}\right)^{2n}$
@Inquest: Because when $n=1$ you can only take 2 steps. There is no direct path between 0 and 100000 -you go from 0 to 1 and have to return back to 0.
Mar
4
answered For what value of $p$ is $(M_n)$ a martingale
Mar
4
revised Simple Symmetric Random Walk : $P_{00}^{2n}=\binom{2n}{n}\left(\dfrac{1}{2}\right)^{2n}$
added 217 characters in body
Mar
4
comment Simple Symmetric Random Walk : $P_{00}^{2n}=\binom{2n}{n}\left(\dfrac{1}{2}\right)^{2n}$
@Inquest: Think about it this way: you need $n$ steps in positive direction and another $n$ in negative direction. So you could fill the each of the $2n$ slots with a + or a -, but the number of + and - should be equal to $n$.
Mar
4
answered Simple Symmetric Random Walk : $P_{00}^{2n}=\binom{2n}{n}\left(\dfrac{1}{2}\right)^{2n}$
Mar
4
comment What is the distribution of a random variable $U$ with $P(U⩾t)=\exp(−∫_0^t r(s)ds)$?
@Ethan: For a normal Poisson process, it is $exp(-\lambda t)$. In inhomogeneous process, the $\lambda$ varies with time as $\lambda(t)$.
Mar
3
answered Find the expected value of the largest piece of a stick.
Mar
3
comment Show that $Y$ has constant regression with respect to $X$ and/but that $X$ and $Y$ are not independent.
Your region of integration is wrong. The distribution is along the edges of a square with vertices at $(1,0),(0,1),(-1,0),(0,-1)$.
Mar
3
comment Finding the steady state Markov chain?
@user64834: The $\pi$s won't naturally add up to 1 - you have to specify that as a constraint while solving.
Mar
3
revised Finding the steady state Markov chain?
added 312 characters in body
Mar
3
answered Finding the steady state Markov chain?