For 105 consecutive days, a process engineer has measured the temperature of champagne bottles as they are made ready for serving. Each day, she took a sample of 10 bottles. The average across 1050 bottles (105 days, 10 bottles per day) was 58 degrees Fahrenheit. The standard deviation across all bottles was 1.2 degrees.
When constructing an X Bar chart, what would be the upper control limit?
