i need only Qno 2

II Submit your answers in a single PDF le in blackboard. 0 Submit your homework before the deadline. Late submissions will not be accepted. Total points: 20 I. Consider the following six values of a ratio attribute x. POW 5.0. 5.5, 6.2, 4.8. 7.2, and 5.4 1'] Find the mean and standard deviation of x. 4 if} Normalize the above data so that the normalized data have a mean of D and a standard deviation of l. 3 2. 1') What is the range ofvalues that are possible for the cosine similarity? 2 it) If two objects have a cosine similarity of l, are they identical? Explain. 3