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The 95% confidence interval for these parts is 56.98 to 57.05

/in /by

The 95% confidence interval for these parts is 56.98 to 57.05 under normal

operations. A systematic sample is taken from the manufacturing line to determine if the production process is still within acceptable levels. The mean of the sample is 57.06. What should be done about the production line?

Possible answers:

a. Stop the line as it is close to the confidence interval

b. Keep the line operating as it is close to the confidence interval

c. Stop the line as it is outside the confidence interval

d.Keep the line operating as it is outside the confidence interval

 
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