Average Value of Momentum for Harmonic Oscillator

For a one dimensional harmonic oscillator, calculate the average value of the momentum for an oscillator in the ground state <px> (see Dykstra's 'Physical Chemistry, A Modern Introduction', page 278.). The answer is numeric.
Answer is:

Query, is the above formula correct?

Your answer, , was

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Carl W. David
Department of Chemsitry
University of Connecticut
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