Waiting times (in minutes) of customers at a bank where all customers enter a single waiting line and a bank where customers wait in individual lines at three different teller windows are listed below. V Find the coefficient of variation for each of the two sets of data, then compare the variation. Bank A (single line): 6.5 6.6 6.7 6.8 7.1 7.4 7.5 7.6 7.8 7.8 Bank B (individual 4.3 5.4 5.8 6.1 6.7 7.7 7.7 8.5 9.3 9.8 lines): The coefficient of variation for the waiting times at Bank A is %%. (Round to one decimal place as needed.)