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 8 bottles. The average across all 840 bottles (105 days, 8 bottles per day) was 59 degrees Fahrenheit. The standard deviation across all bottles was 1.2 degrees Round your intermediate calculations and final answer to 4 decimal places.) When constructing an X-bar chart, what would be the upper control limit? degrees Fahrenheit