Suppose that Z t = Acos(ω0 t +ϕ), where A, ω0 and ϕ are fixed Using Example 3.2 as a guide, remove the signal from the explosion series shown in Figure 3.6 using the R command ar. Then calculate the...

Suppose that Z_t
= Acos(ω0 t +ϕ), where A, ω0 and ϕ are fixed

Using Example 3.2 as a guide, remove the signal from the explosion series shown in Figure 3.6 using the R command ar. Then calculate the sample ACF of the innovations of explosion series and compare it to the sample ACF of the squared innovations. How do these results compare to the results of Example 3.2 for the EEG and the S&P500 series?