The Northern Outdoors Clothing Company, a mail-order catalogue operation based in Brampton, Ontario, contracts with the Federal Parcel Service (FPS) to deliver all of its orders to customers. Northern tells its customers it will deliver their order (if the items are in stock) within 3 business days anywhere in Ontario. As part of its TQM program, Northern has started tracking the delivery time for some of its orders. The following table shows seven samples of randomly selected orders. Northern at this point claims that it only cares about whether or not the order is delivered on time. Construct an appropriate control chart(s) to monitor FPS delivery quality using 3 sigma limits. Show clearly on the graph the values for the centre line, UCL and LCL. Is the process in control? Justify your answer briefly.