Question: please show excel file/ formula thank you i will thumbs up! Q3. A teller at a drive-up window at a bank had the following service

please show excel file/ formula

thank you i will thumbs up!

Q3. A teller at a drive-up window at a bank had the following service times (in minutes) for 20 randomly selected customers: SAMPLE 4.5 4.2 4.2 4.3 4.3 2 4.6 4.5 4.4 4.7 4.3 4.5 4.6 4.4 4.4 4.6 4 4.7 4.6 4.8 4.5 4.9 Determine the upper and lower control limits? Is the process is in control? Graph the charts

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