The management of the Diners Delight restaurant chain is in the process of establishing quality control charts for the time that its service people give to each customer. Management thinks the length of time that each customer is given should remain within certain limits to enhance service quality. For simplicity, the data from three samples are displayed below. In each sample, five service people were randomly selected, and the customer service they provided was observed. The time (in seconds) to service each customer was recorded as below. Sample Service Sample 1 Sample 2 3 person (morning) (afternoon) (evening) #1 196 196 201 #2 208 206 210 #3 201 208 211 #4 195 206 202 203 #5 200 202 What is the upper control limit of the bar chart for a 99.73% (3-sigma) quality