(a) Combine, in, realizations, covariance functions, and spectral densities for two stationary processes. (b) Combine the processes with the correct pole-zero plot in, where ’x’ depicts poles and ’o’...

(a) Combine, in, realizations, covariance functions, and spectral densities for two stationary processes.

(b) Combine the processes with the correct pole-zero plot in, where ’x’ depicts poles and ’o’ zeros. The processes are of the type AR or MA. State the type and order of the processes.

Shows pole-zero plots, spectral densities, and covariance functions for three AR(2)-processes. Determine which figures that describe the same process.