(Solved): Assume that an ergodic random process \( X(t, s) \) is unknown but its autoco ...

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Assume that an ergodic random process \( X(t, s) \) is unknown but its autocorrelation is given by \[ R_{X X}(\tau)=18+\frac{2}{6+\tau^{2}}\{1+4 \cos (12 \tau)\} . \] - Find \( |\bar{X}| \). - Does the process \( X(t, s) \) have any periodic component? - What is the average power of \( X(t, s) \) ?