p\". v unnuvnumvul . (a) (3 points) We have been using the notation (732D and a; in class to denote the variance of vectors x and y, which are dened as the average squared deviation from the 57: and g, respectively: 1 _ 1 _ 03 = * 2m - m2, 03 = 5 ELM W- n . 7. This is closely related to the idea of the variance of a random variable, which we will cover later in the course, but for this problem you do not need to think about Homework #6 6 random variables, we are only referring to this specic sum, which measures how \"spread out\" the coordinates of a vector are around the average. To get practice working with the variance, show that if 3% = a + bmi, that the mean is and the variance is