(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Suppose that a particle starts at the origin of the real line and moves along the line in

jumps of one unit. For each jump, the probability ispthat the partical will jump one unit to the left and the probability is (1-p) that the particle will jump one unit to the right.

Find the expected value of the position of the particle afternjumps.

2. Relevant equations

E(x)=[tex]\sumf(x)xdx[/tex] from -infinity to +infinity (continuous case)

E(x)=[tex]\sumf(x)x[/tex] for all x (discrete case)

3. The attempt at a solution

p(0<p<1) =>jumps one unit left

q=(1-p) =>jumps one unit right

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Need help with expected value

**Physics Forums | Science Articles, Homework Help, Discussion**