accompanying data set. Times begin when a vehicle stops at the order window and end when the vehicle leaves the pickup window. Lunch times were measured between 11:00 AM and 2:00 PM. Begin with a lower class limit of 70 seconds and use a class width of 40 seconds. Click the icon to view the drive-through service times. Construct the frequency distribution. Service Frequency Time (seconds) 70- Drive-Through Service Times 116 131 147 120 126 136 121 140 77 136 133 m -X