4. (9 points) The data-set X given below contains results of a vaccine trial. The data set contains a measure of various antibodies developed for both the real vaccine shot and placebo shot for six individuals. Perform k- means clustering for 2 iterations and tabulate mean values and the distortion measures in each iterations. X = (1.4889 2.0347 1.7269 -4.1116 -6.1471 -6.0689 0.6966 1.2939 0.2127 -5.8095 - 7.9443 -3.5616 Assume that there are two clusters and the initial guess of each cluster means are -2.5 and -2.5 (0:50)