In the ground state of the harmonic oscillator, what is the probability (correct to three significant digits) of finding the particle outside the classically allowed region? *Hint:* Classically, the energy of an oscillator is E=(1/2)ka2=(1/2)mω2a2, where a is the amplitude. So the "classically allowed region" for an oscillator of energy E extends from −2E/mω2 to +2E/mω2. Look in a math table under "Normal Distribution" or "Error Function" for the numerical value of the integral, or evaluate it by computer.