Chapter 7, Problem 7D.6BE

Interpretation Introduction

Interpretation:

The expectation value of $x$ for a particle with a wavefunction that has the value of $n=2$ has to be calculated.

Concept introduction:

The expectation value is defined as the average value of the large number of measurements obtained for an observable.  The expectation value of an observable $\Omega$ is given by the expression,

    $\langle \Omega \rangle ={\displaystyle \int {\psi }^{*}\Omega \psi \text{d}\tau }$