Question: For 120 consecutive days, a process engineer has measured the temperature of champagne bottles as they are made ready for serving. Each day, she took

For 120 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 720 bottles (120 days, 6 bottles per day) was 58 degrees Fahrenheit. The standard deviation across all bottles was .5 degree Fahrenheit.

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

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