The management of the Diners Delight franchised restaurant chain is in the process of establishingquality-control charts for the time that its service people give to each customer. Management thinks thelength of time that each customer is given should remain within certain limits to enhance service quality.A sample of six service people was selected, and the customer service they provided was observed fourtimes. The activities that the service people were performing were identified, and the time to service onecustomer was recorded as noted below:ServicePersonSample 120012083681401109010665Determine the upper control limits for an X-chart.123Sample 21508593456Service Time (sec)Sample 317510513014575115Sample 415175150175105125