Problem 6-4: Diners Delight (and R Charts) The management of the Diners Delight franchised 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. A sample of six service people was selected, and the customer service they provided was observed four times. The activities that the service people were performing were identified, and the time to service one customer was recorded as noted below: Service Person Sample 1 Sample 2 Sample 3 Sample 4 1 200 150 175 90 2 120 85 105 75 3 83 93 130 150 4 68 150 145 175 5 110 90 75 105 6 115 65 115 125 Copy and paste the data from the table above into Excel. Do the calculations in Excel and develop and R Charts showing the LCL and UCL. Copy and paste the spreadsheet calculations and theand R Charts below. Hint: The sample size is six since each sample contains six observations. After the control chart was established, a sample of six service personnel was observed, and the following customer service times in seconds were recorded: 180, 125, 110, 98, 156, and 190. Is corrective action called for?
Problem 6-4: Diners Delight (and R Charts) The management of the Diners Delight franchised 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. A sample of six service people was selected, and the customer service they provided was observed four times. The activities that the service people were performing were identified, and the time to service one customer was recorded as noted below: Service Person Sample 1 Sample 2 Sample 3 Sample 4 1 200 150 175 90 2 120 85 105 75 3 83 93 130 150 4 68 150 145 175 5 110 90 75 105 6 115 65 115 125 Copy and paste the data from the table above into Excel. Do the calculations in Excel and develop and R Charts showing the LCL and UCL. Copy and paste the spreadsheet calculations and theand R Charts below. Hint: The sample size is six since each sample contains six observations. After the control chart was established, a sample of six service personnel was observed, and the following customer service times in seconds were recorded: 180, 125, 110, 98, 156, and 190. Is corrective action called for?
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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Transcribed Image Text:Problem 6-4: Diners Delight (and R Charts)
The management of the Diners Delight franchised 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.
A sample of six service people was selected, and the customer service they provided was observed four
times. The activities that the service people were performing were identified, and the time to service
one customer was recorded as noted below:
Service Person
Sample 1 Sample 2
Sample 3
Sample 4
1
200
150
175
90
2
120
85
105
75
3
83
93
130
150
4
68
150
145
175
5
110
90
75
105
6
115
65
115
125
Copy and paste the data from the table above into Excel. Do the calculations in Excel and develop and R
Charts showing the LCL and UCL. Copy and paste the spreadsheet calculations and theand R Charts
below. Hint: The sample size is six since each sample contains six observations.
After the control chart was established, a sample of six service personnel was observed, and the
following customer service times in seconds were recorded: 180, 125, 110, 98, 156, and 190. Is corrective
action called for?
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