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Andrew [12]
3 years ago
14

For 126 consecutive days, a process engineer has measured the temperature of champagne bottles as they are made ready for servin

g. Each day, she took a sample of 8 bottles. The average across all 1,008 bottles (126 days, 8 bottles per day) was 58 degrees Fahrenheit. The standard deviation across all bottles was 1.5 degree.
When constructing an X-bar chart, what would be the center line?
Business
1 answer:
34kurt3 years ago
4 0

Answer:

58 degrees fahrenheit

Explanation:

the centerline will be 58 degrees fahrenheit

the upper control limit = 58 degrees + (1.099 x 1.5) = 59.6485 degrees fahrenheit

the lower control limit = 58 degrees - (1.099 x 1.5) = 56.3515 degrees fahrenheit

the A₃ control value for n = 8 is 1.099

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