What is the coefficient of variation in the interarrival time? Hint: from this string of 12 time stamps, find the 11 interarrival times (the first interarrival time is 3:49 - 3:45 = 5 seconds, the second interarrival time is 3:54 - 3:49 = 5 seconds, and so forth). Then find the average and standard deviation of the 11 interarrival times. Then take that standard deviation and divide it by the mean interarrival time, to get the coefficient of variation in the interarrival time, which we denote by CVa. 3:45; 3:49; 3:54; 3:59; 4:04; 4:09; 4:14; 4:19; 4:24; 4:29; 4:34; 4:39