Question: For 111 consecutive days, a process engineer has measured the temperature of champagne bottles as they are made ready for serving. Each day, she took

For 111 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 6 bottles. The average across all 666 bottles (111 days, 6 bottles per day) was 44 degrees Fahrenheit. The standard deviation across all bottles was 1.3 degrees Fahrenheit.

When constructing an X-bar chart, what would be the center line?

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