In Exercise 4.4 we introduced data measured using an oscillatory blood pressure monitoring device. The data (contained in the file blood_pres- sure.mat) comprise an array (p) of pressure measurements in mmHg and an array (peaks) containing zeros and ones, with a value of one where peaks in the pressure oscillations were identified (zero otherwise). Produce a plot of both datasets in the same figure but with two different y axes for the two arrays. Annotate your figure appropriately.