1. The problem statement, all variables and given/known data A particle is of mass m has the wave function [itex]\psi[/itex](x)=Ne-k|x-a| with (a>0): The particle is in the state [itex]\psi[/itex], and its parity is measured. What is the probability to find a positive parity? 2. Relevant equations None that I can think of... 3. The attempt at a solution My attempt at a solution is making the leap that this is a qualitative, rather than quantitative question...which leads me to want to say that there is a 50% chance that one would find a positive parity. Is my assumption that this question wouldn't have a quantitative solution correct? And of course, if it is, did I get the correct reasoning?