3. Problem: The received waveform Y () RPR is given as Y(t) = 2X(t) + N(t - to) for some constant to and where X (.), N(t) (.) are independent WSS RPR's, and N(t) has zero mean. Answer the following questions: (a) Find the mean of Y (t) (b) Find the autocorrelation function of Y(t) (c) Is Y (t) WSS? (d) Find the power of Y (t) (e) Find the PSD of Y (t)